401307488631 has 24 divisors (see below), whose sum is σ = 662663732640. Its totient is φ = 229253530176.

The previous prime is 401307488591. The next prime is 401307488633. The reversal of 401307488631 is 136884703104.

401307488631 is a `hidden beast` number, since 4 + 0 + 1 + 3 + 0 + 7 + 4 + 8 + 8 + 631 = 666.

It is not a de Polignac number, because 401307488631 - 2¹⁷ = 401307357559 is a prime.

It is a super-2 number, since 2×401307488631² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401307488633) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 678916 + ... + 1124073.

It is an arithmetic number, because the mean of its divisors is an integer number (27610988860).

Almost surely, 2^401307488631 is an apocalyptic number.

401307488631 is a deficient number, since it is larger than the sum of its proper divisors (261356244009).

401307488631 is a wasteful number, since it uses less digits than its factorization.

401307488631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1806535 (or 1806532 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 401307488631 in words is "four hundred one billion, three hundred seven million, four hundred eighty-eight thousand, six hundred thirty-one".