316553381 has 2 divisors, whose sum is σ = 316553382. Its totient is φ = 316553380.

The previous prime is 316553353. The next prime is 316553387. The reversal of 316553381 is 183355613.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197852356 + 118701025 = 14066^2 + 10895^2 .

It is a cyclic number.

It is not a de Polignac number, because 316553381 - 2²² = 312359077 is a prime.

It is a super-2 number, since 2×316553381² = 200412086045062322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (316553387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158276690 + 158276691.

It is an arithmetic number, because the mean of its divisors is an integer number (158276691).

Almost surely, 2^316553381 is an apocalyptic number.

It is an amenable number.

316553381 is a deficient number, since it is larger than the sum of its proper divisors (1).

316553381 is an equidigital number, since it uses as much as digits as its factorization.

316553381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32400, while the sum is 35.

The square root of 316553381 is about 17791.9470828799. The cubic root of 316553381 is about 681.5258275822.

The spelling of 316553381 in words is "three hundred sixteen million, five hundred fifty-three thousand, three hundred eighty-one".