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231324102240 = 25357112568979
BaseRepresentation
bin1101011101101111111…
…1011010111001100000
3211010002101002221200020
43113123333122321200
512242222432232430
6254134022153440
722466266266150
oct3273377327140
9733071087606
10231324102240
118a116474900
12389b9b82880
1318a76b0a90a
14b2a6322760
15603d44eb10
hex35dbfdae60

231324102240 has 288 divisors, whose sum is σ = 915356816640. Its totient is φ = 48067261440.

The previous prime is 231324102239. The next prime is 231324102241. The reversal of 231324102240 is 42201423132.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (231324102239) and next prime (231324102241).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 231324102240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231324102241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122071 + ... + 691049.

It is an arithmetic number, because the mean of its divisors is an integer number (3178322280).

Almost surely, 2231324102240 is an apocalyptic number.

231324102240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231324102240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (457678408320).

231324102240 is an abundant number, since it is smaller than the sum of its proper divisors (684032714400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231324102240 is a wasteful number, since it uses less digits than its factorization.

231324102240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569026 (or 569007 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 231324102240 its reverse (42201423132), we get a palindrome (273525525372).

The spelling of 231324102240 in words is "two hundred thirty-one billion, three hundred twenty-four million, one hundred two thousand, two hundred forty".