631070040 has 32 divisors (see below), whose sum is σ = 1893210480. Its totient is φ = 168285312.

The previous prime is 631070023. The next prime is 631070059. The reversal of 631070040 is 40070136.

It is a junction number, because it is equal to n+sod(n) for n = 631069989 and 631070016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2629339 + ... + 2629578.

Almost surely, 2^631070040 is an apocalyptic number.

631070040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

631070040 is an abundant number, since it is smaller than the sum of its proper divisors (1262140440).

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

631070040 is a wasteful number, since it uses less digits than its factorization.

631070040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5258931 (or 5258927 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 631070040 is about 25121.1074596643. The cubic root of 631070040 is about 857.7469600093.

The spelling of 631070040 in words is "six hundred thirty-one million, seventy thousand, forty".