23170131 has 20 divisors (see below), whose sum is σ = 36119952. Its totient is φ = 14773968.

The previous prime is 23170109. The next prime is 23170151. The reversal of 23170131 is 13107132.

It is not a de Polignac number, because 23170131 - 2⁷ = 23170003 is a prime.

It is a super-2 number, since 2×23170131² = 1073709941114322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23170151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4356 + ... + 8081.

Almost surely, 2^23170131 is an apocalyptic number.

23170131 is a deficient number, since it is larger than the sum of its proper divisors (12949821).

23170131 is a wasteful number, since it uses less digits than its factorization.

23170131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12472 (or 12463 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 18.

The square root of 23170131 is about 4813.5362261024. The cubic root of 23170131 is about 285.0861789246.

Adding to 23170131 its reverse (13107132), we get a palindrome (36277263).

It can be divided in two parts, 231 and 70131, that multiplied together give a palindrome (16200261).

The spelling of 23170131 in words is "twenty-three million, one hundred seventy thousand, one hundred thirty-one".