31113023233 has 2 divisors, whose sum is σ = 31113023234. Its totient is φ = 31113023232.

The previous prime is 31113023231. The next prime is 31113023237. The reversal of 31113023233 is 33232031113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28671971584 + 2441051649 = 169328^2 + 49407^2 .

It is a cyclic number.

It is not a de Polignac number, because 31113023233 - 2¹ = 31113023231 is a prime.

Together with 31113023231, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (31113023231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15556511616 + 15556511617.

It is an arithmetic number, because the mean of its divisors is an integer number (15556511617).

Almost surely, 2^31113023233 is an apocalyptic number.

It is an amenable number.

31113023233 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113023233 is an equidigital number, since it uses as much as digits as its factorization.

31113023233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31113023233 its reverse (33232031113), we get a palindrome (64345054346).

The spelling of 31113023233 in words is "thirty-one billion, one hundred thirteen million, twenty-three thousand, two hundred thirty-three".