631294691152 has 10 divisors (see below), whose sum is σ = 1223133464138. Its totient is φ = 315647345568.

The previous prime is 631294691129. The next prime is 631294691171. The reversal of 631294691152 is 251196492136.

It can be written as a sum of positive squares in only one way, i.e., 524459846416 + 106834844736 = 724196^2 + 326856^2 .

It is a junction number, because it is equal to n+sod(n) for n = 631294691096 and 631294691105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19727959083 + ... + 19727959114.

Almost surely, 2^631294691152 is an apocalyptic number.

It is an amenable number.

631294691152 is a deficient number, since it is larger than the sum of its proper divisors (591838772986).

631294691152 is a wasteful number, since it uses less digits than its factorization.

631294691152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39455918205 (or 39455918199 counting only the distinct ones).

The product of its digits is 699840, while the sum is 49.

The spelling of 631294691152 in words is "six hundred thirty-one billion, two hundred ninety-four million, six hundred ninety-one thousand, one hundred fifty-two".