631323404323136 has 28 divisors (see below), whose sum is σ = 1431751291948128. Its totient is φ = 270567173281152.

The previous prime is 631323404323123. The next prime is 631323404323141.

631323404323136 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (28).

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 3 ways as a sum of consecutive naturals, for example, 704602013306 + ... + 704602014201.

Almost surely, 2^{631323404323136} is an apocalyptic number.

It is an amenable number.

631323404323136 is an abundant number, since it is smaller than the sum of its proper divisors (800427887624992).

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

631323404323136 is a wasteful number, since it uses less digits than its factorization.

631323404323136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409204027526 (or 1409204027516 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 44.

It can be divided in two parts, 63132340 and 4323136, that added together give a palindrome (67455476).

The spelling of 631323404323136 in words is "six hundred thirty-one trillion, three hundred twenty-three billion, four hundred four million, three hundred twenty-three thousand, one hundred thirty-six".