23102157 has 16 divisors (see below), whose sum is σ = 34919360. Its totient is φ = 13468032.

The previous prime is 23102141. The next prime is 23102213. The reversal of 23102157 is 75120132.

It is not a de Polignac number, because 23102157 - 2⁴ = 23102141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23102257) 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, 14848 + ... + 16329.

It is an arithmetic number, because the mean of its divisors is an integer number (2182460).

Almost surely, 2^23102157 is an apocalyptic number.

It is an amenable number.

23102157 is a deficient number, since it is larger than the sum of its proper divisors (11817203).

23102157 is a wasteful number, since it uses less digits than its factorization.

23102157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31212.

The product of its (nonzero) digits is 420, while the sum is 21.

The square root of 23102157 is about 4806.4703265494. The cubic root of 23102157 is about 284.8071209570.

Adding to 23102157 its reverse (75120132), we get a palindrome (98222289).

The spelling of 23102157 in words is "twenty-three million, one hundred two thousand, one hundred fifty-seven".