631332506901 has 16 divisors (see below), whose sum is σ = 887157424640. Its totient is φ = 398251799280.

The previous prime is 631332506881. The next prime is 631332506941. The reversal of 631332506901 is 109605233136.

It is not a de Polignac number, because 631332506901 - 2¹¹ = 631332504853 is a prime.

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 631332506901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631332506941) 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, 6682135 + ... + 6775956.

It is an arithmetic number, because the mean of its divisors is an integer number (55447339040).

Almost surely, 2^631332506901 is an apocalyptic number.

It is an amenable number.

631332506901 is a deficient number, since it is larger than the sum of its proper divisors (255824917739).

631332506901 is a wasteful number, since it uses less digits than its factorization.

631332506901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13458936.

The product of its (nonzero) digits is 87480, while the sum is 39.

The spelling of 631332506901 in words is "six hundred thirty-one billion, three hundred thirty-two million, five hundred six thousand, nine hundred one".