316148340421 has 2 divisors, whose sum is σ = 316148340422. Its totient is φ = 316148340420.

The previous prime is 316148340413. The next prime is 316148340461. The reversal of 316148340421 is 124043841613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205018784100 + 111129556321 = 452790^2 + 333361^2 .

It is an emirp because it is prime and its reverse (124043841613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316148340421 - 2³ = 316148340413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316148340461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158074170210 + 158074170211.

It is an arithmetic number, because the mean of its divisors is an integer number (158074170211).

Almost surely, 2^316148340421 is an apocalyptic number.

It is an amenable number.

316148340421 is a deficient number, since it is larger than the sum of its proper divisors (1).

316148340421 is an equidigital number, since it uses as much as digits as its factorization.

316148340421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 316148340421 in words is "three hundred sixteen billion, one hundred forty-eight million, three hundred forty thousand, four hundred twenty-one".