131039418 has 32 divisors (see below), whose sum is σ = 282304512. Its totient is φ = 40431600.

The previous prime is 131039399. The next prime is 131039423. The reversal of 131039418 is 814930131.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11038 + ... + 19593.

It is an arithmetic number, because the mean of its divisors is an integer number (8822016).

Almost surely, 2^131039418 is an apocalyptic number.

131039418 is an abundant number, since it is smaller than the sum of its proper divisors (151265094).

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

131039418 is a wasteful number, since it uses less digits than its factorization.

131039418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30690.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 131039418 is about 11447.2449960678. The cubic root of 131039418 is about 507.9262427274.

Adding to 131039418 its reverse (814930131), we get a palindrome (945969549).

The spelling of 131039418 in words is "one hundred thirty-one million, thirty-nine thousand, four hundred eighteen".