31431343411120 has 20 divisors (see below), whose sum is σ = 73077873431040. Its totient is φ = 12572537364416.

The previous prime is 31431343411063. The next prime is 31431343411163. The reversal of 31431343411120 is 2111434313413.

It is a tau number, because it is divible by the number of its divisors (20).

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, 196445896240 + ... + 196445896399.

It is an arithmetic number, because the mean of its divisors is an integer number (3653893671552).

Almost surely, 2^{31431343411120} is an apocalyptic number.

It is an amenable number.

31431343411120 is an abundant number, since it is smaller than the sum of its proper divisors (41646530019920).

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

31431343411120 is a wasteful number, since it uses less digits than its factorization.

31431343411120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392891792652 (or 392891792646 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 31431343411120 its reverse (2111434313413), we get a palindrome (33542777724533).

The spelling of 31431343411120 in words is "thirty-one trillion, four hundred thirty-one billion, three hundred forty-three million, four hundred eleven thousand, one hundred twenty".