1312315402 has 8 divisors (see below), whose sum is σ = 1982635200. Its totient is φ = 651437004.

The previous prime is 1312315363. The next prime is 1312315421. The reversal of 1312315402 is 2045132131.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2360002 + ... + 2360557.

It is an arithmetic number, because the mean of its divisors is an integer number (247829400).

Almost surely, 2^1312315402 is an apocalyptic number.

1312315402 is a deficient number, since it is larger than the sum of its proper divisors (670319798).

1312315402 is a wasteful number, since it uses less digits than its factorization.

1312315402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4720700.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1312315402 is about 36225.8940814440. The cubic root of 1312315402 is about 1094.8284523765.

Adding to 1312315402 its reverse (2045132131), we get a palindrome (3357447533).

The spelling of 1312315402 in words is "one billion, three hundred twelve million, three hundred fifteen thousand, four hundred two".