316329151421 has 2 divisors, whose sum is σ = 316329151422. Its totient is φ = 316329151420.

The previous prime is 316329151409. The next prime is 316329151447. The reversal of 316329151421 is 124151923613.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 304781284900 + 11547866521 = 552070^2 + 107461^2 .

It is an emirp because it is prime and its reverse (124151923613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316329151421 - 2²⁶ = 316262042557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316329156421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158164575710 + 158164575711.

It is an arithmetic number, because the mean of its divisors is an integer number (158164575711).

Almost surely, 2^316329151421 is an apocalyptic number.

It is an amenable number.

316329151421 is a deficient number, since it is larger than the sum of its proper divisors (1).

316329151421 is an equidigital number, since it uses as much as digits as its factorization.

316329151421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 38.

The spelling of 316329151421 in words is "three hundred sixteen billion, three hundred twenty-nine million, one hundred fifty-one thousand, four hundred twenty-one".