131389516 has 24 divisors (see below), whose sum is σ = 236776176. Its totient is φ = 63748800.

The previous prime is 131389513. The next prime is 131389537. The reversal of 131389516 is 615983131.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (131389513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68166 + ... + 70066.

It is an arithmetic number, because the mean of its divisors is an integer number (9865674).

Almost surely, 2^131389516 is an apocalyptic number.

It is an amenable number.

131389516 is a deficient number, since it is larger than the sum of its proper divisors (105386660).

131389516 is a wasteful number, since it uses less digits than its factorization.

131389516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409 (or 2407 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 131389516 is about 11462.5265975700. The cubic root of 131389516 is about 508.3781826475.

The spelling of 131389516 in words is "one hundred thirty-one million, three hundred eighty-nine thousand, five hundred sixteen".