631275757631 has 16 divisors (see below), whose sum is σ = 649465195680. Its totient is φ = 613146568320.

The previous prime is 631275757601. The next prime is 631275757643. The reversal of 631275757631 is 136757572136.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 631275757631 - 2²⁶ = 631208648767 is a prime.

It is a super-2 number, since 2×631275757631² (a number of 24 digits) 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 (631275757601) 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, 68042765 + ... + 68052041.

It is an arithmetic number, because the mean of its divisors is an integer number (40591574730).

Almost surely, 2^631275757631 is an apocalyptic number.

631275757631 is a deficient number, since it is larger than the sum of its proper divisors (18189438049).

631275757631 is a wasteful number, since it uses less digits than its factorization.

631275757631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12314.

The product of its digits is 5556600, while the sum is 53.

The spelling of 631275757631 in words is "six hundred thirty-one billion, two hundred seventy-five million, seven hundred fifty-seven thousand, six hundred thirty-one".