131309798 has 32 divisors (see below), whose sum is σ = 213857280. Its totient is φ = 60264000.

The previous prime is 131309747. The next prime is 131309807. The reversal of 131309798 is 897903131.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

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, 422063 + ... + 422373.

It is an arithmetic number, because the mean of its divisors is an integer number (6683040).

Almost surely, 2^131309798 is an apocalyptic number.

131309798 is a deficient number, since it is larger than the sum of its proper divisors (82547482).

131309798 is a wasteful number, since it uses less digits than its factorization.

131309798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 131309798 is about 11459.0487388788. The cubic root of 131309798 is about 508.2753456981.

The spelling of 131309798 in words is "one hundred thirty-one million, three hundred nine thousand, seven hundred ninety-eight".