31011313113 has 24 divisors (see below), whose sum is σ = 51740803296. Its totient is φ = 17689161600.

The previous prime is 31011313097. The next prime is 31011313117. The reversal of 31011313113 is 31131311013.

31011313113 is a `hidden beast` number, since 310 + 11 + 31 + 311 + 3 = 666.

It is not a de Polignac number, because 31011313113 - 2⁴ = 31011313097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31011313117) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 9211423 + ... + 9214788.

It is an arithmetic number, because the mean of its divisors is an integer number (2155866804).

Almost surely, 2^31011313113 is an apocalyptic number.

31011313113 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31011313113 is a deficient number, since it is larger than the sum of its proper divisors (20729490183).

31011313113 is a wasteful number, since it uses less digits than its factorization.

31011313113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18426245 (or 18426242 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

Adding to 31011313113 its reverse (31131311013), we get a palindrome (62142624126).

The spelling of 31011313113 in words is "thirty-one billion, eleven million, three hundred thirteen thousand, one hundred thirteen".