31011232113 has 12 divisors (see below), whose sum is σ = 44929335568. Its totient is φ = 20611693080.

The previous prime is 31011232081. The next prime is 31011232141. The reversal of 31011232113 is 31123211013.

31011232113 is a `hidden beast` number, since 310 + 11 + 232 + 113 = 666.

It is not a de Polignac number, because 31011232113 - 2⁵ = 31011232081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31011230113) 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 11 ways as a sum of consecutive naturals, for example, 5201995 + ... + 5207952.

Almost surely, 2^31011232113 is an apocalyptic number.

It is an amenable number.

31011232113 is a deficient number, since it is larger than the sum of its proper divisors (13918103455).

31011232113 is a wasteful number, since it uses less digits than its factorization.

31011232113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10410284 (or 10410281 counting only the distinct ones).

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

Adding to 31011232113 its reverse (31123211013), we get a palindrome (62134443126).

It can be divided in two parts, 310112 and 32113, that added together give a square (342225 = 585²).

The spelling of 31011232113 in words is "thirty-one billion, eleven million, two hundred thirty-two thousand, one hundred thirteen".