222931392813 has 12 divisors (see below), whose sum is σ = 325200250908. Its totient is φ = 147149433600.

The previous prime is 222931392799. The next prime is 222931392821. The reversal of 222931392813 is 318293139222.

222931392813 is a `hidden beast` number, since 2 + 229 + 31 + 392 + 8 + 1 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 106225801929 + 116705590884 = 325923^2 + 341622^2 .

It is not a de Polignac number, because 222931392813 - 2¹⁶ = 222931327277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222931392833) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 122623620 + ... + 122625437.

It is an arithmetic number, because the mean of its divisors is an integer number (27100020909).

Almost surely, 2^222931392813 is an apocalyptic number.

It is an amenable number.

222931392813 is a deficient number, since it is larger than the sum of its proper divisors (102268858095).

222931392813 is a wasteful number, since it uses less digits than its factorization.

222931392813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245249164 (or 245249161 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The spelling of 222931392813 in words is "two hundred twenty-two billion, nine hundred thirty-one million, three hundred ninety-two thousand, eight hundred thirteen".