401704631 has 4 divisors (see below), whose sum is σ = 422847000. Its totient is φ = 380562264.

The previous prime is 401704609. The next prime is 401704691. The reversal of 401704631 is 136407104.

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

It is a cyclic number.

It is not a de Polignac number, because 401704631 - 2¹⁰ = 401703607 is a prime.

It is a super-2 number, since 2×401704631² = 322733221133692322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401704631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401704601) 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, 10571156 + ... + 10571193.

It is an arithmetic number, because the mean of its divisors is an integer number (105711750).

Almost surely, 2^401704631 is an apocalyptic number.

401704631 is a deficient number, since it is larger than the sum of its proper divisors (21142369).

401704631 is a wasteful number, since it uses less digits than its factorization.

401704631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21142368.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 401704631 is about 20042.5704688795. The cubic root of 401704631 is about 737.8514688243.

The spelling of 401704631 in words is "four hundred one million, seven hundred four thousand, six hundred thirty-one".