23081157 has 12 divisors (see below), whose sum is σ = 36370464. Its totient is φ = 13988520.

The previous prime is 23081137. The next prime is 23081173. The reversal of 23081157 is 75118032.

It is not a de Polignac number, because 23081157 - 2¹⁹ = 22556869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23081157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23081137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 116473 + ... + 116670.

It is an arithmetic number, because the mean of its divisors is an integer number (3030872).

Almost surely, 2^23081157 is an apocalyptic number.

It is an amenable number.

23081157 is a deficient number, since it is larger than the sum of its proper divisors (13289307).

23081157 is a wasteful number, since it uses less digits than its factorization.

23081157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233160 (or 233157 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 23081157 is about 4804.2852746272. The cubic root of 23081157 is about 284.7207976655.

Adding to 23081157 its reverse (75118032), we get a palindrome (98199189).

The spelling of 23081157 in words is "twenty-three million, eighty-one thousand, one hundred fifty-seven".