1312555307 has 12 divisors (see below), whose sum is σ = 1527515640. Its totient is φ = 1124557056.

The previous prime is 1312555303. The next prime is 1312555333. The reversal of 1312555307 is 7035552131.

It is not a de Polignac number, because 1312555307 - 2² = 1312555303 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1312555303) 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 in 11 ways as a sum of consecutive naturals, for example, 149444 + ... + 157982.

It is an arithmetic number, because the mean of its divisors is an integer number (127292970).

Almost surely, 2^1312555307 is an apocalyptic number.

1312555307 is a deficient number, since it is larger than the sum of its proper divisors (214960333).

1312555307 is an equidigital number, since it uses as much as digits as its factorization.

1312555307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11690 (or 11683 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 32.

The square root of 1312555307 is about 36229.2051665504. The cubic root of 1312555307 is about 1094.8951636807.

The spelling of 1312555307 in words is "one billion, three hundred twelve million, five hundred fifty-five thousand, three hundred seven".