31203300330913 has 2 divisors, whose sum is σ = 31203300330914. Its totient is φ = 31203300330912.

The previous prime is 31203300330617. The next prime is 31203300330973. The reversal of 31203300330913 is 31903300330213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24226005248064 + 6977295082849 = 4921992^2 + 2641457^2 .

It is a cyclic number.

It is not a de Polignac number, because 31203300330913 - 2¹³ = 31203300322721 is a prime.

It is not a weakly prime, because it can be changed into another prime (31203300330973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15601650165456 + 15601650165457.

It is an arithmetic number, because the mean of its divisors is an integer number (15601650165457).

Almost surely, 2^{31203300330913} is an apocalyptic number.

It is an amenable number.

31203300330913 is a deficient number, since it is larger than the sum of its proper divisors (1).

31203300330913 is an equidigital number, since it uses as much as digits as its factorization.

31203300330913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 31.

The spelling of 31203300330913 in words is "thirty-one trillion, two hundred three billion, three hundred million, three hundred thirty thousand, nine hundred thirteen".