311752949 has 2 divisors, whose sum is σ = 311752950. Its totient is φ = 311752948.

The previous prime is 311752913. The next prime is 311752979. The reversal of 311752949 is 949257113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223054225 + 88698724 = 14935^2 + 9418^2 .

It is a cyclic number.

It is not a de Polignac number, because 311752949 - 2¹⁶ = 311687413 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311752979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155876474 + 155876475.

It is an arithmetic number, because the mean of its divisors is an integer number (155876475).

Almost surely, 2^311752949 is an apocalyptic number.

It is an amenable number.

311752949 is a deficient number, since it is larger than the sum of its proper divisors (1).

311752949 is an equidigital number, since it uses as much as digits as its factorization.

311752949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 41.

The square root of 311752949 is about 17656.5270934009. The cubic root of 311752949 is about 678.0632237721.

The spelling of 311752949 in words is "three hundred eleven million, seven hundred fifty-two thousand, nine hundred forty-nine".