402113312 has 12 divisors (see below), whose sum is σ = 791660646. Its totient is φ = 201056640.

The previous prime is 402113311. The next prime is 402113329. The reversal of 402113312 is 213311204.

It can be written as a sum of positive squares in only one way, i.e., 286421776 + 115691536 = 16924^2 + 10756^2 .

It is not an unprimeable number, because it can be changed into a prime (402113311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6282989 + ... + 6283052.

Almost surely, 2^402113312 is an apocalyptic number.

It is an amenable number.

402113312 is a deficient number, since it is larger than the sum of its proper divisors (389547334).

402113312 is a wasteful number, since it uses less digits than its factorization.

402113312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12566051 (or 12566043 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 402113312 is about 20052.7632011152. The cubic root of 402113312 is about 738.1016059066.

Adding to 402113312 its reverse (213311204), we get a palindrome (615424516).

The spelling of 402113312 in words is "four hundred two million, one hundred thirteen thousand, three hundred twelve".