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231253824 = 2631204447
BaseRepresentation
bin11011100100010…
…10011101000000
3121010010220121110
431302022131000
5433200110244
634540323320
75505424254
oct1562123500
9533126543
10231253824
1110959a46a
1265543540
1338baaba9
14229da264
151547e9b9
hexdc8a740

231253824 has 28 divisors (see below), whose sum is σ = 611859584. Its totient is φ = 77084544.

The previous prime is 231253819. The next prime is 231253837. The reversal of 231253824 is 428352132.

It is a super-2 number, since 2×2312538242 = 106956662229245952, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231253791 and 231253800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 602032 + ... + 602415.

It is an arithmetic number, because the mean of its divisors is an integer number (21852128).

Almost surely, 2231253824 is an apocalyptic number.

231253824 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231253824 is an abundant number, since it is smaller than the sum of its proper divisors (380605760).

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

231253824 is a wasteful number, since it uses less digits than its factorization.

231253824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204462 (or 1204452 counting only the distinct ones).

The product of its digits is 11520, while the sum is 30.

The square root of 231253824 is about 15207.0320575713. The cubic root of 231253824 is about 613.8038963901.

The spelling of 231253824 in words is "two hundred thirty-one million, two hundred fifty-three thousand, eight hundred twenty-four".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 64 96 192 1204447 2408894 3613341 4817788 7226682 9635576 14453364 19271152 28906728 38542304 57813456 77084608 115626912 231253824