631794631 has 16 divisors (see below), whose sum is σ = 718552800. Its totient is φ = 550689408.

The previous prime is 631794617. The next prime is 631794637. The reversal of 631794631 is 136497136.

It is a cyclic number.

It is not a de Polignac number, because 631794631 - 2¹³ = 631786439 is a prime.

It is a super-2 number, since 2×631794631² = 798328911520852322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631794637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74265 + ... + 82333.

It is an arithmetic number, because the mean of its divisors is an integer number (44909550).

Almost surely, 2^631794631 is an apocalyptic number.

631794631 is a deficient number, since it is larger than the sum of its proper divisors (86758169).

631794631 is a wasteful number, since it uses less digits than its factorization.

631794631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8418.

The product of its digits is 81648, while the sum is 40.

The square root of 631794631 is about 25135.5252779806. The cubic root of 631794631 is about 858.0751211569.

The spelling of 631794631 in words is "six hundred thirty-one million, seven hundred ninety-four thousand, six hundred thirty-one".