131029976 has 64 divisors (see below), whose sum is σ = 307687680. Its totient is φ = 50820480.

The previous prime is 131029967. The next prime is 131029993. The reversal of 131029976 is 679920131.

It is a happy number.

It is a super-2 number, since 2×131029976² = 34337709221121152, which contains 22 as substring.

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, 213446 + ... + 214058.

It is an arithmetic number, because the mean of its divisors is an integer number (4807620).

Almost surely, 2^131029976 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 131029976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153843840).

131029976 is an abundant number, since it is smaller than the sum of its proper divisors (176657704).

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

131029976 is a wasteful number, since it uses less digits than its factorization.

131029976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 980 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 131029976 is about 11446.8325749965. The cubic root of 131029976 is about 507.9140429511.

The spelling of 131029976 in words is "one hundred thirty-one million, twenty-nine thousand, nine hundred seventy-six".