131031790 has 16 divisors (see below), whose sum is σ = 248271120. Its totient is φ = 49654080.

The previous prime is 131031787. The next prime is 131031799. The reversal of 131031790 is 97130131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131031799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344631 + ... + 345010.

It is an arithmetic number, because the mean of its divisors is an integer number (15516945).

Almost surely, 2^131031790 is an apocalyptic number.

131031790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

131031790 is a deficient number, since it is larger than the sum of its proper divisors (117239330).

131031790 is a wasteful number, since it uses less digits than its factorization.

131031790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689667.

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 131031790 is about 11446.9118106151. The cubic root of 131031790 is about 507.9163868214.

The spelling of 131031790 in words is "one hundred thirty-one million, thirty-one thousand, seven hundred ninety".