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231012342 = 232111166729
BaseRepresentation
bin11011100010011…
…11011111110110
3121002200122100200
431301033133312
5433114343332
634531221330
75503400241
oct1561173766
9532618320
10231012342
11109444aa0
1265447846
1338b24cc2
1422976258
151543317c
hexdc4f7f6

231012342 has 24 divisors (see below), whose sum is σ = 546029640. Its totient is φ = 70003680.

The previous prime is 231012283. The next prime is 231012367. The reversal of 231012342 is 243210132.

231012342 is a `hidden beast` number, since 2 + 310 + 12 + 342 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 583167 + ... + 583562.

It is an arithmetic number, because the mean of its divisors is an integer number (22751235).

Almost surely, 2231012342 is an apocalyptic number.

231012342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231012342 is an abundant number, since it is smaller than the sum of its proper divisors (315017298).

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

231012342 is a wasteful number, since it uses less digits than its factorization.

231012342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1166748 (or 1166745 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 231012342 is about 15199.0901701385. The cubic root of 231012342 is about 613.5901713257.

Adding to 231012342 its reverse (243210132), we get a palindrome (474222474).

The spelling of 231012342 in words is "two hundred thirty-one million, twelve thousand, three hundred forty-two".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 198 1166729 2333458 3500187 7000374 10500561 12834019 21001122 25668038 38502057 77004114 115506171 231012342