131979336 has 64 divisors (see below), whose sum is σ = 345755520. Its totient is φ = 41902080.

The previous prime is 131979317. The next prime is 131979371. The reversal of 131979336 is 633979131.

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, 205576 + ... + 206216.

It is an arithmetic number, because the mean of its divisors is an integer number (5402430).

Almost surely, 2^131979336 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131979336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172877760).

131979336 is an abundant number, since it is smaller than the sum of its proper divisors (213776184).

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

131979336 is a wasteful number, since it uses less digits than its factorization.

131979336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046 (or 1042 counting only the distinct ones).

The product of its digits is 91854, while the sum is 42.

The square root of 131979336 is about 11488.2259727079. The cubic root of 131979336 is about 509.1377664585.

The spelling of 131979336 in words is "one hundred thirty-one million, nine hundred seventy-nine thousand, three hundred thirty-six".