31130320311113 has 4 divisors (see below), whose sum is σ = 31336481372928. Its totient is φ = 30924159249300.

The previous prime is 31130320311091. The next prime is 31130320311127. The reversal of 31130320311113 is 31111302303113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31130320311113 - 2⁶ = 31130320311049 is a prime.

It is a super-2 number, since 2×31130320311113² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31130320311163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103080530681 + ... + 103080530982.

It is an arithmetic number, because the mean of its divisors is an integer number (7834120343232).

Almost surely, 2^{31130320311113} is an apocalyptic number.

It is an amenable number.

31130320311113 is a deficient number, since it is larger than the sum of its proper divisors (206161061815).

31130320311113 is a wasteful number, since it uses less digits than its factorization.

31130320311113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206161061814.

The product of its (nonzero) digits is 486, while the sum is 23.

Adding to 31130320311113 its reverse (31111302303113), we get a palindrome (62241622614226).

The spelling of 31130320311113 in words is "thirty-one trillion, one hundred thirty billion, three hundred twenty million, three hundred eleven thousand, one hundred thirteen".