401502431 has 8 divisors (see below), whose sum is σ = 438476544. Its totient is φ = 364607320.

The previous prime is 401502397. The next prime is 401502443. The reversal of 401502431 is 134205104.

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

It is not a de Polignac number, because 401502431 - 2²² = 397308127 is a prime.

It is a super-2 number, since 2×401502431² = 322408404197819522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401502131) 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, 8855 + ... + 29688.

It is an arithmetic number, because the mean of its divisors is an integer number (54809568).

Almost surely, 2^401502431 is an apocalyptic number.

401502431 is a deficient number, since it is larger than the sum of its proper divisors (36974113).

401502431 is a wasteful number, since it uses less digits than its factorization.

401502431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39501.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 401502431 is about 20037.5255707884. The cubic root of 401502431 is about 737.7276476591.

Adding to 401502431 its reverse (134205104), we get a palindrome (535707535).

The spelling of 401502431 in words is "four hundred one million, five hundred two thousand, four hundred thirty-one".