31113072167072 has 24 divisors (see below), whose sum is σ = 70004412376416. Its totient is φ = 13334173785792.

The previous prime is 31113072167057. The next prime is 31113072167113. The reversal of 31113072167072 is 27076127031113.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69448821578 + ... + 69448822025.

It is an arithmetic number, because the mean of its divisors is an integer number (2916850515684).

Almost surely, 2^{31113072167072} is an apocalyptic number.

31113072167072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31113072167072 is an abundant number, since it is smaller than the sum of its proper divisors (38891340209344).

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

31113072167072 is a wasteful number, since it uses less digits than its factorization.

31113072167072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138897643620 (or 138897643612 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 41.

Adding to 31113072167072 its reverse (27076127031113), we get a palindrome (58189199198185).

The spelling of 31113072167072 in words is "thirty-one trillion, one hundred thirteen billion, seventy-two million, one hundred sixty-seven thousand, seventy-two".