15128131 has 16 divisors (see below), whose sum is σ = 16156800. Its totient is φ = 14148288.

The previous prime is 15128129. The next prime is 15128137. The reversal of 15128131 is 13182151.

It is a cyclic number.

It is not a de Polignac number, because 15128131 - 2¹ = 15128129 is a prime.

It is a super-2 number, since 2×15128131² = 457720695106322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15128137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169935 + ... + 170023.

It is an arithmetic number, because the mean of its divisors is an integer number (1009800).

Almost surely, 2^15128131 is an apocalyptic number.

15128131 is a deficient number, since it is larger than the sum of its proper divisors (1028669).

15128131 is an equidigital number, since it uses as much as digits as its factorization.

15128131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258.

The product of its digits is 240, while the sum is 22.

The square root of 15128131 is about 3889.4898123019. The cubic root of 15128131 is about 247.3214356680.

It can be divided in two parts, 151 and 28131, that added together give a palindrome (28282).

The spelling of 15128131 in words is "fifteen million, one hundred twenty-eight thousand, one hundred thirty-one".