317770249 has 2 divisors, whose sum is σ = 317770250. Its totient is φ = 317770248.

The previous prime is 317770223. The next prime is 317770279. The reversal of 317770249 is 942077713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227044624 + 90725625 = 15068^2 + 9525^2 .

It is a cyclic number.

It is not a de Polignac number, because 317770249 - 2⁵ = 317770217 is a prime.

It is a super-2 number, since 2×317770249² = 201955862299044002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (317770279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158885124 + 158885125.

It is an arithmetic number, because the mean of its divisors is an integer number (158885125).

Almost surely, 2^317770249 is an apocalyptic number.

It is an amenable number.

317770249 is a deficient number, since it is larger than the sum of its proper divisors (1).

317770249 is an equidigital number, since it uses as much as digits as its factorization.

317770249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 317770249 is about 17826.1114380002. Note that the first 3 decimals coincide. The cubic root of 317770249 is about 682.3979991313.

The spelling of 317770249 in words is "three hundred seventeen million, seven hundred seventy thousand, two hundred forty-nine".