1023311249 has 2 divisors, whose sum is σ = 1023311250. Its totient is φ = 1023311248.

The previous prime is 1023311207. The next prime is 1023311269. The reversal of 1023311249 is 9421133201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 814075024 + 209236225 = 28532^2 + 14465^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023311249 - 2⁸ = 1023310993 is a prime.

It is not a weakly prime, because it can be changed into another prime (1023311269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511655624 + 511655625.

It is an arithmetic number, because the mean of its divisors is an integer number (511655625).

Almost surely, 2^1023311249 is an apocalyptic number.

It is an amenable number.

1023311249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023311249 is an equidigital number, since it uses as much as digits as its factorization.

1023311249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1023311249 is about 31989.2364554079. The cubic root of 1023311249 is about 1007.7108069699.

The spelling of 1023311249 in words is "one billion, twenty-three million, three hundred eleven thousand, two hundred forty-nine".