31120023101013 has 24 divisors (see below), whose sum is σ = 56042985326016. Its totient is φ = 16166245766400.

The previous prime is 31120023100979. The next prime is 31120023101039. The reversal of 31120023101013 is 31010132002113.

31120023101013 is a `hidden beast` number, since 311 + 20 + 0 + 2 + 310 + 10 + 13 = 666.

It is not a de Polignac number, because 31120023101013 - 2¹² = 31120023096917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31120023141013) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22453118428 + ... + 22453119813.

It is an arithmetic number, because the mean of its divisors is an integer number (2335124388584).

Almost surely, 2^{31120023101013} is an apocalyptic number.

31120023101013 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31120023101013 is a deficient number, since it is larger than the sum of its proper divisors (24922962225003).

31120023101013 is a wasteful number, since it uses less digits than its factorization.

31120023101013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44906238265 (or 44906238262 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 31120023101013 its reverse (31010132002113), we get a palindrome (62130155103126).

The spelling of 31120023101013 in words is "thirty-one trillion, one hundred twenty billion, twenty-three million, one hundred one thousand, thirteen".