402224631 has 8 divisors (see below), whose sum is σ = 536511984. Its totient is φ = 268043520.

The previous prime is 402224609. The next prime is 402224639. The reversal of 402224631 is 136422204.

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

It is not a de Polignac number, because 402224631 - 2⁶ = 402224567 is a prime.

It is a super-2 number, since 2×402224631² = 323569307566172322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402224639) 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, 17260 + ... + 33201.

It is an arithmetic number, because the mean of its divisors is an integer number (67063998).

Almost surely, 2^402224631 is an apocalyptic number.

402224631 is a deficient number, since it is larger than the sum of its proper divisors (134287353).

402224631 is a wasteful number, since it uses less digits than its factorization.

402224631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53121.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 402224631 is about 20055.5386614272. The cubic root of 402224631 is about 738.1697103847.

Adding to 402224631 its reverse (136422204), we get a palindrome (538646835).

The spelling of 402224631 in words is "four hundred two million, two hundred twenty-four thousand, six hundred thirty-one".