402054331 has 4 divisors (see below), whose sum is σ = 459490672. Its totient is φ = 344617992.

The previous prime is 402054313. The next prime is 402054361. The reversal of 402054331 is 133450204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402054331 is a prime.

It is a super-2 number, since 2×402054331² = 323295370151715122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402054361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28718160 + ... + 28718173.

It is an arithmetic number, because the mean of its divisors is an integer number (114872668).

Almost surely, 2^402054331 is an apocalyptic number.

402054331 is a deficient number, since it is larger than the sum of its proper divisors (57436341).

402054331 is an equidigital number, since it uses as much as digits as its factorization.

402054331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57436340.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 402054331 is about 20051.2925019810. The cubic root of 402054331 is about 738.0655164942.

The spelling of 402054331 in words is "four hundred two million, fifty-four thousand, three hundred thirty-one".