231366516 has 36 divisors (see below), whose sum is σ = 557859456. Its totient is φ = 74630640.

The previous prime is 231366511. The next prime is 231366517. The reversal of 231366516 is 615663132.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231366511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1501 + ... + 21563.

It is an arithmetic number, because the mean of its divisors is an integer number (15496096).

Almost surely, 2^231366516 is an apocalyptic number.

It is an amenable number.

231366516 is an abundant number, since it is smaller than the sum of its proper divisors (326492940).

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

231366516 is a wasteful number, since it uses less digits than its factorization.

231366516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20132 (or 20099 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 231366516 is about 15210.7368657800. The cubic root of 231366516 is about 613.9035841916.

The spelling of 231366516 in words is "two hundred thirty-one million, three hundred sixty-six thousand, five hundred sixteen".