23438031647 has 16 divisors (see below), whose sum is σ = 25885009920. Its totient is φ = 21135880800.

The previous prime is 23438031599. The next prime is 23438031653. The reversal of 23438031647 is 74613083432.

It is a cyclic number.

It is not a de Polignac number, because 23438031647 - 2³⁰ = 22364289823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23438031667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 290243 + ... + 362100.

It is an arithmetic number, because the mean of its divisors is an integer number (1617813120).

Almost surely, 2^23438031647 is an apocalyptic number.

23438031647 is a deficient number, since it is larger than the sum of its proper divisors (2446978273).

23438031647 is a wasteful number, since it uses less digits than its factorization.

23438031647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652454.

The product of its (nonzero) digits is 290304, while the sum is 41.

The spelling of 23438031647 in words is "twenty-three billion, four hundred thirty-eight million, thirty-one thousand, six hundred forty-seven".