31133038231 has 2 divisors, whose sum is σ = 31133038232. Its totient is φ = 31133038230.

The previous prime is 31133038217. The next prime is 31133038241. The reversal of 31133038231 is 13283033113.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31133038231 - 2⁵ = 31133038199 is a prime.

It is a super-2 number, since 2×31133038231² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31133038231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31133038201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15566519115 + 15566519116.

It is an arithmetic number, because the mean of its divisors is an integer number (15566519116).

Almost surely, 2^31133038231 is an apocalyptic number.

31133038231 is a deficient number, since it is larger than the sum of its proper divisors (1).

31133038231 is an equidigital number, since it uses as much as digits as its factorization.

31133038231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 31133038231 in words is "thirty-one billion, one hundred thirty-three million, thirty-eight thousand, two hundred thirty-one".