31054988139720 has 128 divisors (see below), whose sum is σ = 97223970124800. Its totient is φ = 7920591554304.

The previous prime is 31054988139671. The next prime is 31054988139727. The reversal of 31054988139720 is 2793188945013.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (31054988139727) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32032419 + ... + 32987661.

It is an arithmetic number, because the mean of its divisors is an integer number (759562266600).

Almost surely, 2^{31054988139720} is an apocalyptic number.

31054988139720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31054988139720 is an abundant number, since it is smaller than the sum of its proper divisors (66168981985080).

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

31054988139720 is a wasteful number, since it uses less digits than its factorization.

31054988139720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967059 (or 967055 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 31054988139720 in words is "thirty-one trillion, fifty-four billion, nine hundred eighty-eight million, one hundred thirty-nine thousand, seven hundred twenty".