131503995 has 72 divisors (see below), whose sum is σ = 276790176. Its totient is φ = 57480192.

The previous prime is 131503991. The next prime is 131504003. The reversal of 131503995 is 599305131.

It is not a de Polignac number, because 131503995 - 2² = 131503991 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131503991) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 49419 + ... + 52011.

It is an arithmetic number, because the mean of its divisors is an integer number (3844308).

Almost surely, 2^131503995 is an apocalyptic number.

131503995 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131503995 is an abundant number, since it is smaller than the sum of its proper divisors (145286181).

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

131503995 is a wasteful number, since it uses less digits than its factorization.

131503995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641 (or 2631 counting only the distinct ones).

The product of its (nonzero) digits is 18225, while the sum is 36.

The square root of 131503995 is about 11467.5191301345. The cubic root of 131503995 is about 508.5257888726.

The spelling of 131503995 in words is "one hundred thirty-one million, five hundred three thousand, nine hundred ninety-five".