31301213212349 has 2 divisors, whose sum is σ = 31301213212350. Its totient is φ = 31301213212348.

The previous prime is 31301213212309. The next prime is 31301213212351. The reversal of 31301213212349 is 94321231210313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25237380837124 + 6063832375225 = 5023682^2 + 2462485^2 .

It is a cyclic number.

It is not a de Polignac number, because 31301213212349 - 2¹² = 31301213208253 is a prime.

Together with 31301213212351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31301213212309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15650606606174 + 15650606606175.

It is an arithmetic number, because the mean of its divisors is an integer number (15650606606175).

Almost surely, 2^{31301213212349} is an apocalyptic number.

It is an amenable number.

31301213212349 is a deficient number, since it is larger than the sum of its proper divisors (1).

31301213212349 is an equidigital number, since it uses as much as digits as its factorization.

31301213212349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 31301213212349 in words is "thirty-one trillion, three hundred one billion, two hundred thirteen million, two hundred twelve thousand, three hundred forty-nine".