131917407990 has 32 divisors (see below), whose sum is σ = 316611874656. Its totient is φ = 35176853760.

The previous prime is 131917407893. The next prime is 131917407997. The reversal of 131917407990 is 99704719131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131917407997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1374160 + ... + 1467020.

It is an arithmetic number, because the mean of its divisors is an integer number (9894121083).

Almost surely, 2^131917407990 is an apocalyptic number.

131917407990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131917407990 is an abundant number, since it is smaller than the sum of its proper divisors (184694466666).

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

131917407990 is a wasteful number, since it uses less digits than its factorization.

131917407990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140224.

The product of its (nonzero) digits is 428652, while the sum is 51.

The spelling of 131917407990 in words is "one hundred thirty-one billion, nine hundred seventeen million, four hundred seven thousand, nine hundred ninety".