31143112160 has 48 divisors (see below), whose sum is σ = 73698660000. Its totient is φ = 12436409856.

The previous prime is 31143112159. The next prime is 31143112199. The reversal of 31143112160 is 6121134113.

It is a happy number.

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, 66635 + ... + 258314.

It is an arithmetic number, because the mean of its divisors is an integer number (1535388750).

Almost surely, 2^31143112160 is an apocalyptic number.

It is an amenable number.

31143112160 is an abundant number, since it is smaller than the sum of its proper divisors (42555547840).

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

31143112160 is a wasteful number, since it uses less digits than its factorization.

31143112160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325563 (or 325555 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 31143112160 its reverse (6121134113), we get a palindrome (37264246273).

The spelling of 31143112160 in words is "thirty-one billion, one hundred forty-three million, one hundred twelve thousand, one hundred sixty".