31310201313 has 6 divisors (see below), whose sum is σ = 45225846354. Its totient is φ = 20873467536.

The previous prime is 31310201297. The next prime is 31310201317.

It is a happy number.

31310201313 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 31290779664 + 19421649 = 176892^2 + 4407^2 .

It is not a de Polignac number, because 31310201313 - 2⁴ = 31310201297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31310201317) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1739455620 + ... + 1739455637.

It is an arithmetic number, because the mean of its divisors is an integer number (7537641059).

Almost surely, 2^31310201313 is an apocalyptic number.

It is an amenable number.

31310201313 is a deficient number, since it is larger than the sum of its proper divisors (13915645041).

31310201313 is a wasteful number, since it uses less digits than its factorization.

31310201313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3478911263 (or 3478911260 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The spelling of 31310201313 in words is "thirty-one billion, three hundred ten million, two hundred one thousand, three hundred thirteen".