1312202443 has 8 divisors (see below), whose sum is σ = 1401688368. Its totient is φ = 1224082944.

The previous prime is 1312202413. The next prime is 1312202449. The reversal of 1312202443 is 3442022131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1312202443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312202449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339621 + ... + 343462.

It is an arithmetic number, because the mean of its divisors is an integer number (175211046).

Almost surely, 2^1312202443 is an apocalyptic number.

1312202443 is a deficient number, since it is larger than the sum of its proper divisors (89485925).

1312202443 is a wasteful number, since it uses less digits than its factorization.

1312202443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683213.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1312202443 is about 36224.3349559381. The cubic root of 1312202443 is about 1094.7970386184.

Adding to 1312202443 its reverse (3442022131), we get a palindrome (4754224574).

The spelling of 1312202443 in words is "one billion, three hundred twelve million, two hundred two thousand, four hundred forty-three".