631142160 has 80 divisors (see below), whose sum is σ = 2134416960. Its totient is φ = 153003520.

The previous prime is 631142147. The next prime is 631142191. The reversal of 631142160 is 61241136.

631142160 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×631142160² = 796680852258931200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 631142160.

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, 116895 + ... + 122174.

It is an arithmetic number, because the mean of its divisors is an integer number (26680212).

Almost surely, 2^631142160 is an apocalyptic number.

631142160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

631142160 is an abundant number, since it is smaller than the sum of its proper divisors (1503274800).

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

631142160 is a wasteful number, since it uses less digits than its factorization.

631142160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239096 (or 239090 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 631142160 is about 25122.5428649251. The cubic root of 631142160 is about 857.7796338017.

Adding to 631142160 its reverse (61241136), we get a palindrome (692383296).

The spelling of 631142160 in words is "six hundred thirty-one million, one hundred forty-two thousand, one hundred sixty".