631104240 has 80 divisors (see below), whose sum is σ = 2106927648. Its totient is φ = 155347968.

The previous prime is 631104239. The next prime is 631104259. The reversal of 631104240 is 42401136.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98019 + ... + 104258.

Almost surely, 2^631104240 is an apocalyptic number.

631104240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

631104240 is an abundant number, since it is smaller than the sum of its proper divisors (1475823408).

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

631104240 is a wasteful number, since it uses less digits than its factorization.

631104240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202306 (or 202300 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 631104240 is about 25121.7881529162. The cubic root of 631104240 is about 857.7624545473.

Adding to 631104240 its reverse (42401136), we get a palindrome (673505376).

The spelling of 631104240 in words is "six hundred thirty-one million, one hundred four thousand, two hundred forty".