693216931 has 8 divisors (see below), whose sum is σ = 756430128. Its totient is φ = 630036000.

The previous prime is 693216911. The next prime is 693216967. The reversal of 693216931 is 139612396.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 693216931 - 2²⁵ = 659662499 is a prime.

It is a super-2 number, since 2×693216931² = 961099426850117522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (693216911) 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, 68541 + ... + 78001.

It is an arithmetic number, because the mean of its divisors is an integer number (94553766).

Almost surely, 2^693216931 is an apocalyptic number.

693216931 is a deficient number, since it is larger than the sum of its proper divisors (63213197).

693216931 is a wasteful number, since it uses less digits than its factorization.

693216931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16133.

The product of its digits is 52488, while the sum is 40.

The square root of 693216931 is about 26329.0131034188. The cubic root of 693216931 is about 885.0267288468.

The spelling of 693216931 in words is "six hundred ninety-three million, two hundred sixteen thousand, nine hundred thirty-one".