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231411460 = 22577322643
BaseRepresentation
bin11011100101100…
…00111100000100
3121010102220211211
431302300330010
5433220131320
634543541204
75506651660
oct1562607404
9533386754
10231411460
11109697945
12655ba804
1338c34877
1422a3b8a0
15154b155a
hexdcb0f04

231411460 has 48 divisors (see below), whose sum is σ = 563020416. Its totient is φ = 78250752.

The previous prime is 231411451. The next prime is 231411493. The reversal of 231411460 is 64114132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1102 + ... + 21541.

It is an arithmetic number, because the mean of its divisors is an integer number (11729592).

Almost surely, 2231411460 is an apocalyptic number.

231411460 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 231411460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (281510208).

231411460 is an abundant number, since it is smaller than the sum of its proper divisors (331608956).

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

231411460 is a wasteful number, since it uses less digits than its factorization.

231411460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22732 (or 22730 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 231411460 is about 15212.2141715136. The cubic root of 231411460 is about 613.9433328074.

Adding to 231411460 its reverse (64114132), we get a palindrome (295525592).

The spelling of 231411460 in words is "two hundred thirty-one million, four hundred eleven thousand, four hundred sixty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 73 140 146 292 365 511 730 1022 1460 2044 2555 5110 10220 22643 45286 90572 113215 158501 226430 317002 452860 634004 792505 1585010 1652939 3170020 3305878 6611756 8264695 11570573 16529390 23141146 33058780 46282292 57852865 115705730 231411460