531311516 has 24 divisors (see below), whose sum is σ = 980676480. Its totient is φ = 251173872.

The previous prime is 531311507. The next prime is 531311537. The reversal of 531311516 is 615113135.

It is a congruent number.

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, 33065 + ... + 46431.

It is an arithmetic number, because the mean of its divisors is an integer number (40861520).

Almost surely, 2^531311516 is an apocalyptic number.

It is an amenable number.

531311516 is a deficient number, since it is larger than the sum of its proper divisors (449364964).

531311516 is a wasteful number, since it uses less digits than its factorization.

531311516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13913 (or 13911 counting only the distinct ones).

The product of its digits is 1350, while the sum is 26.

The square root of 531311516 is about 23050.1955740076. The cubic root of 531311516 is about 809.9342099692.

The spelling of 531311516 in words is "five hundred thirty-one million, three hundred eleven thousand, five hundred sixteen".