31203942713 has 2 divisors, whose sum is σ = 31203942714. Its totient is φ = 31203942712.

The previous prime is 31203942683. The next prime is 31203942719. The reversal of 31203942713 is 31724930213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30755689129 + 448253584 = 175373^2 + 21172^2 .

It is a cyclic number.

It is not a de Polignac number, because 31203942713 - 2⁸ = 31203942457 is a prime.

It is not a weakly prime, because it can be changed into another prime (31203942719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15601971356 + 15601971357.

It is an arithmetic number, because the mean of its divisors is an integer number (15601971357).

Almost surely, 2^31203942713 is an apocalyptic number.

It is an amenable number.

31203942713 is a deficient number, since it is larger than the sum of its proper divisors (1).

31203942713 is an equidigital number, since it uses as much as digits as its factorization.

31203942713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The spelling of 31203942713 in words is "thirty-one billion, two hundred three million, nine hundred forty-two thousand, seven hundred thirteen".