631507020 has 24 divisors (see below), whose sum is σ = 1768219824. Its totient is φ = 168401856.

The previous prime is 631507003. The next prime is 631507027. The reversal of 631507020 is 20705136.

It is a super-2 number, since 2×631507020² = 797602232618560800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (631507027) 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, 5262499 + ... + 5262618.

It is an arithmetic number, because the mean of its divisors is an integer number (73675826).

Almost surely, 2^631507020 is an apocalyptic number.

631507020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

631507020 is an abundant number, since it is smaller than the sum of its proper divisors (1136712804).

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

631507020 is a wasteful number, since it uses less digits than its factorization.

631507020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10525129 (or 10525127 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 631507020 is about 25129.8034214357. The cubic root of 631507020 is about 857.9448946086.

The spelling of 631507020 in words is "six hundred thirty-one million, five hundred seven thousand, twenty".