31203322213313 has 2 divisors, whose sum is σ = 31203322213314. Its totient is φ = 31203322213312.

The previous prime is 31203322213307. The next prime is 31203322213339. The reversal of 31203322213313 is 31331222330213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21159696401089 + 10043625812224 = 4599967^2 + 3169168^2 .

It is a cyclic number.

It is not a de Polignac number, because 31203322213313 - 2⁴⁴ = 13611136168897 is a prime.

It is not a weakly prime, because it can be changed into another prime (31203322213513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15601661106656 + 15601661106657.

It is an arithmetic number, because the mean of its divisors is an integer number (15601661106657).

Almost surely, 2^{31203322213313} is an apocalyptic number.

It is an amenable number.

31203322213313 is a deficient number, since it is larger than the sum of its proper divisors (1).

31203322213313 is an equidigital number, since it uses as much as digits as its factorization.

31203322213313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 29.

Adding to 31203322213313 its reverse (31331222330213), we get a palindrome (62534544543526).

The spelling of 31203322213313 in words is "thirty-one trillion, two hundred three billion, three hundred twenty-two million, two hundred thirteen thousand, three hundred thirteen".