631020136 has 16 divisors (see below), whose sum is σ = 1183644000. Its totient is φ = 315381744.

The previous prime is 631020133. The next prime is 631020149.

631020136 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (631020133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6765 + ... + 36163.

It is an arithmetic number, because the mean of its divisors is an integer number (73977750).

Almost surely, 2^631020136 is an apocalyptic number.

It is an amenable number.

631020136 is a deficient number, since it is larger than the sum of its proper divisors (552623864).

631020136 is a wasteful number, since it uses less digits than its factorization.

631020136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32088 (or 32084 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 631020136 is about 25120.1141717151. The cubic root of 631020136 is about 857.7243496650.

The spelling of 631020136 in words is "six hundred thirty-one million, twenty thousand, one hundred thirty-six".