31310002193 has 2 divisors, whose sum is σ = 31310002194. Its totient is φ = 31310002192.

The previous prime is 31310002123. The next prime is 31310002211. The reversal of 31310002193 is 39120001313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21505635904 + 9804366289 = 146648^2 + 99017^2 .

It is a cyclic number.

It is not a de Polignac number, because 31310002193 - 2³² = 27015034897 is a prime.

It is not a weakly prime, because it can be changed into another prime (31310002123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15655001096 + 15655001097.

It is an arithmetic number, because the mean of its divisors is an integer number (15655001097).

Almost surely, 2^31310002193 is an apocalyptic number.

It is an amenable number.

31310002193 is a deficient number, since it is larger than the sum of its proper divisors (1).

31310002193 is an equidigital number, since it uses as much as digits as its factorization.

31310002193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 486, while the sum is 23.

The spelling of 31310002193 in words is "thirty-one billion, three hundred ten million, two thousand, one hundred ninety-three".