131356988 has 12 divisors (see below), whose sum is σ = 262714032. Its totient is φ = 56295840.

The previous prime is 131356987. The next prime is 131356999. The reversal of 131356988 is 889653131.

131356988 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131356987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2345633 + ... + 2345688.

It is an arithmetic number, because the mean of its divisors is an integer number (21892836).

Almost surely, 2^131356988 is an apocalyptic number.

It is an amenable number.

131356988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

131356988 is a wasteful number, since it uses less digits than its factorization.

131356988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4691332 (or 4691330 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 131356988 is about 11461.1076253563. The cubic root of 131356988 is about 508.3362262548.

The spelling of 131356988 in words is "one hundred thirty-one million, three hundred fifty-six thousand, nine hundred eighty-eight".