313031313193 has 2 divisors, whose sum is σ = 313031313194. Its totient is φ = 313031313192.

The previous prime is 313031313191. The next prime is 313031313227. The reversal of 313031313193 is 391313130313.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 313031298064 + 15129 = 559492^2 + 123^2 .

It is a cyclic number.

It is not a de Polignac number, because 313031313193 - 2¹ = 313031313191 is a prime.

Together with 313031313191, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (313031313191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156515656596 + 156515656597.

It is an arithmetic number, because the mean of its divisors is an integer number (156515656597).

Almost surely, 2^313031313193 is an apocalyptic number.

It is an amenable number.

313031313193 is a deficient number, since it is larger than the sum of its proper divisors (1).

313031313193 is an equidigital number, since it uses as much as digits as its factorization.

313031313193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6561, while the sum is 31.

The spelling of 313031313193 in words is "three hundred thirteen billion, thirty-one million, three hundred thirteen thousand, one hundred ninety-three".