1310231249 has 2 divisors, whose sum is σ = 1310231250. Its totient is φ = 1310231248.

The previous prime is 1310231239. The next prime is 1310231257. The reversal of 1310231249 is 9421320131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1282141249 + 28090000 = 35807^2 + 5300^2 .

It is a cyclic number.

It is not a de Polignac number, because 1310231249 - 2¹² = 1310227153 is a prime.

It is a super-2 number, since 2×1310231249² = 3433411851712200002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1310231239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 655115624 + 655115625.

It is an arithmetic number, because the mean of its divisors is an integer number (655115625).

Almost surely, 2^1310231249 is an apocalyptic number.

It is an amenable number.

1310231249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1310231249 is an equidigital number, since it uses as much as digits as its factorization.

1310231249 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1310231249 is about 36197.1165840596. The cubic root of 1310231249 is about 1094.2485615443.

The spelling of 1310231249 in words is "one billion, three hundred ten million, two hundred thirty-one thousand, two hundred forty-nine".