631619190172 has 12 divisors (see below), whose sum is σ = 1120901661936. Its totient is φ = 311361572480.

The previous prime is 631619190143. The next prime is 631619190173. The reversal of 631619190172 is 271091916136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631619190173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1112005333 + ... + 1112005900.

It is an arithmetic number, because the mean of its divisors is an integer number (93408471828).

Almost surely, 2^631619190172 is an apocalyptic number.

It is an amenable number.

631619190172 is a deficient number, since it is larger than the sum of its proper divisors (489282471764).

631619190172 is a wasteful number, since it uses less digits than its factorization.

631619190172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224011308 (or 2224011306 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 46.

The spelling of 631619190172 in words is "six hundred thirty-one billion, six hundred nineteen million, one hundred ninety thousand, one hundred seventy-two".