631197812106 has 24 divisors (see below), whose sum is σ = 1377434079840. Its totient is φ = 208885606056.

The previous prime is 631197812081. The next prime is 631197812131. The reversal of 631197812106 is 601218791136.

631197812106 is a `hidden beast` number, since 631 + 1 + 9 + 7 + 8 + 1 + 2 + 1 + 0 + 6 = 666.

It is an interprime number because it is at equal distance from previous prime (631197812081) and next prime (631197812131).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126136150 + ... + 126141153.

It is an arithmetic number, because the mean of its divisors is an integer number (57393086660).

Almost surely, 2^631197812106 is an apocalyptic number.

631197812106 is an abundant number, since it is smaller than the sum of its proper divisors (746236267734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631197812106 is a wasteful number, since it uses less digits than its factorization.

631197812106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252277450 (or 252277447 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The spelling of 631197812106 in words is "six hundred thirty-one billion, one hundred ninety-seven million, eight hundred twelve thousand, one hundred six".