131325402 has 32 divisors (see below), whose sum is σ = 284139072. Its totient is φ = 40224384.

The previous prime is 131325367. The next prime is 131325421. The reversal of 131325402 is 204523131.

It is a super-2 number, since 2×131325402² = 34492722420923208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13998 + ... + 21414.

It is an arithmetic number, because the mean of its divisors is an integer number (8879346).

Almost surely, 2^131325402 is an apocalyptic number.

131325402 is an abundant number, since it is smaller than the sum of its proper divisors (152813670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131325402 is a wasteful number, since it uses less digits than its factorization.

131325402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7662.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 131325402 is about 11459.7295779613. The cubic root of 131325402 is about 508.2954782763.

Adding to 131325402 its reverse (204523131), we get a palindrome (335848533).

The spelling of 131325402 in words is "one hundred thirty-one million, three hundred twenty-five thousand, four hundred two".