1312251907 has 8 divisors (see below), whose sum is σ = 1316169920. Its totient is φ = 1308341160.

The previous prime is 1312251901. The next prime is 1312251949. The reversal of 1312251907 is 7091522131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1312251907 - 2⁷ = 1312251779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312251901) 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 7 ways as a sum of consecutive naturals, for example, 651532 + ... + 653542.

It is an arithmetic number, because the mean of its divisors is an integer number (164521240).

Almost surely, 2^1312251907 is an apocalyptic number.

1312251907 is a deficient number, since it is larger than the sum of its proper divisors (3918013).

1312251907 is an equidigital number, since it uses as much as digits as its factorization.

1312251907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3633.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 1312251907 is about 36225.0176949577. The cubic root of 1312251907 is about 1094.8107947174.

The spelling of 1312251907 in words is "one billion, three hundred twelve million, two hundred fifty-one thousand, nine hundred seven".