31130113033 has 2 divisors, whose sum is σ = 31130113034. Its totient is φ = 31130113032.

The previous prime is 31130112997. The next prime is 31130113037. The reversal of 31130113033 is 33031103113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30412569664 + 717543369 = 174392^2 + 26787^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31130113033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31130113033.

It is not a weakly prime, because it can be changed into another prime (31130113037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15565056516 + 15565056517.

It is an arithmetic number, because the mean of its divisors is an integer number (15565056517).

Almost surely, 2^31130113033 is an apocalyptic number.

It is an amenable number.

31130113033 is a deficient number, since it is larger than the sum of its proper divisors (1).

31130113033 is an equidigital number, since it uses as much as digits as its factorization.

31130113033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 243, while the sum is 19.

Adding to 31130113033 its reverse (33031103113), we get a palindrome (64161216146).

The spelling of 31130113033 in words is "thirty-one billion, one hundred thirty million, one hundred thirteen thousand, thirty-three".