31123200013011 has 32 divisors (see below), whose sum is σ = 46140395400000. Its totient is φ = 20734427153664.

The previous prime is 31123200013007. The next prime is 31123200013159. The reversal of 31123200013011 is 11031000232113.

31123200013011 is a `hidden beast` number, since 31 + 12 + 320 + 0 + 0 + 1 + 301 + 1 = 666.

It is not a de Polignac number, because 31123200013011 - 2² = 31123200013007 is a prime.

It is a super-2 number, since 2×31123200013011² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31123200017011) 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, 230691871 + ... + 230826743.

It is an arithmetic number, because the mean of its divisors is an integer number (1441887356250).

Almost surely, 2^{31123200013011} is an apocalyptic number.

31123200013011 is a deficient number, since it is larger than the sum of its proper divisors (15017195386989).

31123200013011 is a wasteful number, since it uses less digits than its factorization.

31123200013011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140740 (or 140734 counting only the distinct ones).

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

Adding to 31123200013011 its reverse (11031000232113), we get a palindrome (42154200245124).

The spelling of 31123200013011 in words is "thirty-one trillion, one hundred twenty-three billion, two hundred million, thirteen thousand, eleven".