31142125168 has 80 divisors (see below), whose sum is σ = 75819147264. Its totient is φ = 12037697280.

The previous prime is 31142125117. The next prime is 31142125171. The reversal of 31142125168 is 86152124113.

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, 56946 + ... + 255982.

Almost surely, 2^31142125168 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31142125168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37909573632).

31142125168 is an abundant number, since it is smaller than the sum of its proper divisors (44677022096).

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

31142125168 is a wasteful number, since it uses less digits than its factorization.

31142125168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199190 (or 199184 counting only the distinct ones).

The product of its digits is 11520, while the sum is 34.

The spelling of 31142125168 in words is "thirty-one billion, one hundred forty-two million, one hundred twenty-five thousand, one hundred sixty-eight".