131215488 has 64 divisors (see below), whose sum is σ = 360590400. Its totient is φ = 42226688.

The previous prime is 131215477. The next prime is 131215499. The reversal of 131215488 is 884512131.

It is an interprime number because it is at equal distance from previous prime (131215477) and next prime (131215499).

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5245 + ... + 17027.

It is an arithmetic number, because the mean of its divisors is an integer number (5634225).

Almost surely, 2^131215488 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 131215488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180295200).

131215488 is an abundant number, since it is smaller than the sum of its proper divisors (229374912).

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

131215488 is a wasteful number, since it uses less digits than its factorization.

131215488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11829 (or 11817 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 131215488 is about 11454.9329111959. The cubic root of 131215488 is about 508.1536311743.

The spelling of 131215488 in words is "one hundred thirty-one million, two hundred fifteen thousand, four hundred eighty-eight".