315854249 has 2 divisors, whose sum is σ = 315854250. Its totient is φ = 315854248.

The previous prime is 315854197. The next prime is 315854251. The reversal of 315854249 is 942458513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 294740224 + 21114025 = 17168^2 + 4595^2 .

It is a cyclic number.

It is not a de Polignac number, because 315854249 - 2¹⁶ = 315788713 is a prime.

It is a super-2 number, since 2×315854249² = 199527813222708002, which contains 22 as substring.

Together with 315854251, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (315854269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157927124 + 157927125.

It is an arithmetic number, because the mean of its divisors is an integer number (157927125).

Almost surely, 2^315854249 is an apocalyptic number.

It is an amenable number.

315854249 is a deficient number, since it is larger than the sum of its proper divisors (1).

315854249 is an equidigital number, since it uses as much as digits as its factorization.

315854249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 41.

The square root of 315854249 is about 17772.2887946376. The cubic root of 315854249 is about 681.0237240375.

The spelling of 315854249 in words is "three hundred fifteen million, eight hundred fifty-four thousand, two hundred forty-nine".