23157031 has 8 divisors (see below), whose sum is σ = 24035328. Its totient is φ = 22287000.

The previous prime is 23157019. The next prime is 23157059. The reversal of 23157031 is 13075132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23157031 - 2²¹ = 21059879 is a prime.

It is a super-2 number, since 2×23157031² = 1072496169469922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23156993 and 23157011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23157011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3966 + ... + 7876.

It is an arithmetic number, because the mean of its divisors is an integer number (3004416).

Almost surely, 2^23157031 is an apocalyptic number.

23157031 is a deficient number, since it is larger than the sum of its proper divisors (878297).

23157031 is a wasteful number, since it uses less digits than its factorization.

23157031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 23157031 is about 4812.1752877467. The cubic root of 23157031 is about 285.0324411620.

The spelling of 23157031 in words is "twenty-three million, one hundred fifty-seven thousand, thirty-one".