631246642136 has 32 divisors (see below), whose sum is σ = 1293182081280. Its totient is φ = 286486788000.

The previous prime is 631246642099. The next prime is 631246642181.

631246642136 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5486540 + ... + 5600411.

It is an arithmetic number, because the mean of its divisors is an integer number (40411940040).

Almost surely, 2^631246642136 is an apocalyptic number.

It is an amenable number.

631246642136 is an abundant number, since it is smaller than the sum of its proper divisors (661935439144).

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

631246642136 is a wasteful number, since it uses less digits than its factorization.

631246642136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11087615 (or 11087611 counting only the distinct ones).

The product of its digits is 746496, while the sum is 44.

The spelling of 631246642136 in words is "six hundred thirty-one billion, two hundred forty-six million, six hundred forty-two thousand, one hundred thirty-six".