402113331 has 6 divisors (see below), whose sum is σ = 580830380. Its totient is φ = 268075548.

The previous prime is 402113329. The next prime is 402113357. The reversal of 402113331 is 133311204.

It is not a de Polignac number, because 402113331 - 2¹ = 402113329 is a prime.

It is a super-2 number, since 2×402113331² = 323390261935831122, which contains 22 as substring.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 22339621 + ... + 22339638.

Almost surely, 2^402113331 is an apocalyptic number.

402113331 is a deficient number, since it is larger than the sum of its proper divisors (178717049).

402113331 is a wasteful number, since it uses less digits than its factorization.

402113331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44679265 (or 44679262 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 402113331 is about 20052.7636748654. The cubic root of 402113331 is about 738.1016175318.

Adding to 402113331 its reverse (133311204), we get a palindrome (535424535).

The spelling of 402113331 in words is "four hundred two million, one hundred thirteen thousand, three hundred thirty-one".