31031220011120 has 40 divisors (see below), whose sum is σ = 82454384602464. Its totient is φ = 10639275432192.

The previous prime is 31031220011053. The next prime is 31031220011159. The reversal of 31031220011120 is 2111002213013.

It is a tau number, because it is divible by the number of its divisors (40).

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, 27706445879 + ... + 27706446998.

Almost surely, 2^{31031220011120} is an apocalyptic number.

It is an amenable number.

31031220011120 is an abundant number, since it is smaller than the sum of its proper divisors (51423164591344).

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

31031220011120 is a wasteful number, since it uses less digits than its factorization.

31031220011120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55412892897 (or 55412892891 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 31031220011120 its reverse (2111002213013), we get a palindrome (33142222224133).

The spelling of 31031220011120 in words is "thirty-one trillion, thirty-one billion, two hundred twenty million, eleven thousand, one hundred twenty".