316262381 has 2 divisors, whose sum is σ = 316262382. Its totient is φ = 316262380.

The previous prime is 316262363. The next prime is 316262383. The reversal of 316262381 is 183262613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271920100 + 44342281 = 16490^2 + 6659^2 .

It is an emirp because it is prime and its reverse (183262613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 316262381 - 2²² = 312068077 is a prime.

It is a super-2 number, since 2×316262381² = 200043787271578322, which contains 22 as substring.

Together with 316262383, 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 (316262383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158131190 + 158131191.

It is an arithmetic number, because the mean of its divisors is an integer number (158131191).

Almost surely, 2^316262381 is an apocalyptic number.

It is an amenable number.

316262381 is a deficient number, since it is larger than the sum of its proper divisors (1).

316262381 is an equidigital number, since it uses as much as digits as its factorization.

316262381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 316262381 is about 17783.7673455317. The cubic root of 316262381 is about 681.3169267245.

The spelling of 316262381 in words is "three hundred sixteen million, two hundred sixty-two thousand, three hundred eighty-one".