310331221349 has 2 divisors, whose sum is σ = 310331221350. Its totient is φ = 310331221348.

The previous prime is 310331221309. The next prime is 310331221381. The reversal of 310331221349 is 943122133013.

It is an a-pointer prime, because the next prime (310331221381) can be obtained adding 310331221349 to its sum of digits (32).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 301310970724 + 9020250625 = 548918^2 + 94975^2 .

It is a cyclic number.

It is not a de Polignac number, because 310331221349 - 2²⁴ = 310314444133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (310331221309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155165610674 + 155165610675.

It is an arithmetic number, because the mean of its divisors is an integer number (155165610675).

Almost surely, 2^310331221349 is an apocalyptic number.

It is an amenable number.

310331221349 is a deficient number, since it is larger than the sum of its proper divisors (1).

310331221349 is an equidigital number, since it uses as much as digits as its factorization.

310331221349 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 32.

The spelling of 310331221349 in words is "three hundred ten billion, three hundred thirty-one million, two hundred twenty-one thousand, three hundred forty-nine".