401354631 has 12 divisors (see below), whose sum is σ = 579950280. Its totient is φ = 267470160.

The previous prime is 401354627. The next prime is 401354659. The reversal of 401354631 is 136453104.

It is not a de Polignac number, because 401354631 - 2² = 401354627 is a prime.

It is a super-2 number, since 2×401354631² = 322171079650292322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401354595 and 401354604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401354831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23725 + ... + 36953.

It is an arithmetic number, because the mean of its divisors is an integer number (48329190).

Almost surely, 2^401354631 is an apocalyptic number.

401354631 is a deficient number, since it is larger than the sum of its proper divisors (178595649).

401354631 is a wasteful number, since it uses less digits than its factorization.

401354631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16606 (or 16603 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 401354631 is about 20033.8371511800. The cubic root of 401354631 is about 737.6371131069.

The spelling of 401354631 in words is "four hundred one million, three hundred fifty-four thousand, six hundred thirty-one".