1312040302 has 8 divisors (see below), whose sum is σ = 1983557376. Its totient is φ = 650854512.

The previous prime is 1312040299. The next prime is 1312040309. The reversal of 1312040302 is 2030402131.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312040309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2582503 + ... + 2583010.

It is an arithmetic number, because the mean of its divisors is an integer number (247944672).

Almost surely, 2^1312040302 is an apocalyptic number.

1312040302 is a deficient number, since it is larger than the sum of its proper divisors (671517074).

1312040302 is a wasteful number, since it uses less digits than its factorization.

1312040302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5165642.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1312040302 is about 36222.0968746979. The cubic root of 1312040302 is about 1094.7519442558.

Adding to 1312040302 its reverse (2030402131), we get a palindrome (3342442433).

The spelling of 1312040302 in words is "one billion, three hundred twelve million, forty thousand, three hundred two".