231626016 has 72 divisors (see below), whose sum is σ = 681424380. Its totient is φ = 74543616.

The previous prime is 231625973. The next prime is 231626023. The reversal of 231626016 is 610626132.

231626016 is a `hidden beast` number, since 2 + 31 + 626 + 0 + 1 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 226803600 + 4822416 = 15060^2 + 2196^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×231626016² = 107301222576064512, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 5515 + ... + 22218.

Almost surely, 2^231626016 is an apocalyptic number.

It is an amenable number.

231626016 is an abundant number, since it is smaller than the sum of its proper divisors (449798364).

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

231626016 is a wasteful number, since it uses less digits than its factorization.

231626016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27778 (or 27767 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 231626016 is about 15219.2646340091. The cubic root of 231626016 is about 614.1330159177.

The spelling of 231626016 in words is "two hundred thirty-one million, six hundred twenty-six thousand, sixteen".