23281397907 has 32 divisors (see below), whose sum is σ = 31771411008. Its totient is φ = 15160836096.

The previous prime is 23281397903. The next prime is 23281397911. The reversal of 23281397907 is 70979318232.

It is an interprime number because it is at equal distance from previous prime (23281397903) and next prime (23281397911).

It is not a de Polignac number, because 23281397907 - 2² = 23281397903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23281397907.

It is not an unprimeable number, because it can be changed into a prime (23281397903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20191443 + ... + 20192595.

It is an arithmetic number, because the mean of its divisors is an integer number (992856594).

Almost surely, 2^23281397907 is an apocalyptic number.

23281397907 is a deficient number, since it is larger than the sum of its proper divisors (8490013101).

23281397907 is a wasteful number, since it uses less digits than its factorization.

23281397907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its (nonzero) digits is 1143072, while the sum is 51.

The spelling of 23281397907 in words is "twenty-three billion, two hundred eighty-one million, three hundred ninety-seven thousand, nine hundred seven".