31130311113 has 48 divisors (see below), whose sum is σ = 51669159360. Its totient is φ = 17862249600.

The previous prime is 31130311111. The next prime is 31130311123. The reversal of 31130311113 is 31111303113.

31130311113 is a `hidden beast` number, since 311 + 30 + 311 + 1 + 13 = 666.

It is not a de Polignac number, because 31130311113 - 2¹ = 31130311111 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31130311111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3496095 + ... + 3504987.

It is an arithmetic number, because the mean of its divisors is an integer number (1076440820).

Almost surely, 2^31130311113 is an apocalyptic number.

31130311113 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

31130311113 is a deficient number, since it is larger than the sum of its proper divisors (20538848247).

31130311113 is a wasteful number, since it uses less digits than its factorization.

31130311113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10790 (or 10787 counting only the distinct ones).

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

Adding to 31130311113 its reverse (31111303113), we get a palindrome (62241614226).

It can be divided in two parts, 31130 and 311113, that added together give a palindrome (342243).

The spelling of 31130311113 in words is "thirty-one billion, one hundred thirty million, three hundred eleven thousand, one hundred thirteen".