31011200113 has 16 divisors (see below), whose sum is σ = 32762444800. Its totient is φ = 29272032720.

The previous prime is 31011200093. The next prime is 31011200117. The reversal of 31011200113 is 31100211013.

It is a cyclic number.

It is not a de Polignac number, because 31011200113 - 2⁹ = 31011199601 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31011200093 and 31011200102.

It is not an unprimeable number, because it can be changed into a prime (31011200117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11109748 + ... + 11112538.

It is an arithmetic number, because the mean of its divisors is an integer number (2047652800).

Almost surely, 2^31011200113 is an apocalyptic number.

It is an amenable number.

31011200113 is a deficient number, since it is larger than the sum of its proper divisors (1751244687).

31011200113 is a wasteful number, since it uses less digits than its factorization.

31011200113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 31011200113 its reverse (31100211013), we get a palindrome (62111411126).

The spelling of 31011200113 in words is "thirty-one billion, eleven million, two hundred thousand, one hundred thirteen".