31320134369 has 2 divisors, whose sum is σ = 31320134370. Its totient is φ = 31320134368.

The previous prime is 31320134327. The next prime is 31320134371. The reversal of 31320134369 is 96343102313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27552016144 + 3768118225 = 165988^2 + 61385^2 .

It is a cyclic number.

It is not a de Polignac number, because 31320134369 - 2⁸ = 31320134113 is a prime.

It is a super-3 number, since 3×31320134369³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 31320134371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (31320134389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660067184 + 15660067185.

It is an arithmetic number, because the mean of its divisors is an integer number (15660067185).

Almost surely, 2^31320134369 is an apocalyptic number.

It is an amenable number.

31320134369 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320134369 is an equidigital number, since it uses as much as digits as its factorization.

31320134369 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34992, while the sum is 35.

The spelling of 31320134369 in words is "thirty-one billion, three hundred twenty million, one hundred thirty-four thousand, three hundred sixty-nine".