631220022136 has 32 divisors (see below), whose sum is σ = 1322622892080. Its totient is φ = 279920185600.

The previous prime is 631220022133. The next prime is 631220022149.

631220022136 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631220022133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87471451 + ... + 87478666.

Almost surely, 2^631220022136 is an apocalyptic number.

It is an amenable number.

631220022136 is an abundant number, since it is smaller than the sum of its proper divisors (691402869944).

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

631220022136 is a wasteful number, since it uses less digits than its factorization.

631220022136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174950175 (or 174950171 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

It can be divided in two parts, 6312200 and 22136, that added together give a palindrome (6334336).

The spelling of 631220022136 in words is "six hundred thirty-one billion, two hundred twenty million, twenty-two thousand, one hundred thirty-six".