31042355120 has 80 divisors (see below), whose sum is σ = 82508647680. Its totient is φ = 10639909632.

The previous prime is 31042355117. The next prime is 31042355143. The reversal of 31042355120 is 2155324013.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×31042355120² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31042355120.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2594111 + ... + 2606049.

It is an arithmetic number, because the mean of its divisors is an integer number (1031358096).

Almost surely, 2^31042355120 is an apocalyptic number.

It is an amenable number.

31042355120 is an abundant number, since it is smaller than the sum of its proper divisors (51466292560).

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

31042355120 is a wasteful number, since it uses less digits than its factorization.

31042355120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16602 (or 16596 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 31042355120 its reverse (2155324013), we get a palindrome (33197679133).

The spelling of 31042355120 in words is "thirty-one billion, forty-two million, three hundred fifty-five thousand, one hundred twenty".