631170140 has 24 divisors (see below), whose sum is σ = 1383086880. Its totient is φ = 241491008.

The previous prime is 631170131. The next prime is 631170143. The reversal of 631170140 is 41071136.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631170143) 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, 685595 + ... + 686514.

It is an arithmetic number, because the mean of its divisors is an integer number (57628620).

Almost surely, 2^631170140 is an apocalyptic number.

It is an amenable number.

631170140 is an abundant number, since it is smaller than the sum of its proper divisors (751916740).

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

631170140 is a wasteful number, since it uses less digits than its factorization.

631170140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372141 (or 1372139 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 631170140 is about 25123.0997291337. The cubic root of 631170140 is about 857.7923094032.

The spelling of 631170140 in words is "six hundred thirty-one million, one hundred seventy thousand, one hundred forty".