1312400351 has 8 divisors (see below), whose sum is σ = 1331804640. Its totient is φ = 1293034752.

The previous prime is 1312400333. The next prime is 1312400389. The reversal of 1312400351 is 1530042131.

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 1312400351 - 2²² = 1308206047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312400951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62615 + ... + 80903.

It is an arithmetic number, because the mean of its divisors is an integer number (166475580).

Almost surely, 2^1312400351 is an apocalyptic number.

1312400351 is a deficient number, since it is larger than the sum of its proper divisors (19404289).

1312400351 is an equidigital number, since it uses as much as digits as its factorization.

1312400351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19345.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1312400351 is about 36227.0665525102. The cubic root of 1312400351 is about 1094.8520754007.

Adding to 1312400351 its reverse (1530042131), we get a palindrome (2842442482).

The spelling of 1312400351 in words is "one billion, three hundred twelve million, four hundred thousand, three hundred fifty-one".