1312323202 has 4 divisors (see below), whose sum is σ = 1968484806. Its totient is φ = 656161600.

The previous prime is 1312323197. The next prime is 1312323223. The reversal of 1312323202 is 2023232131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2023232131 = 21193 ⋅95467.

It can be written as a sum of positive squares in only one way, i.e., 725278761 + 587044441 = 26931^2 + 24229^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1312323202.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328080799 + ... + 328080802.

Almost surely, 2^1312323202 is an apocalyptic number.

1312323202 is a deficient number, since it is larger than the sum of its proper divisors (656161604).

1312323202 is an equidigital number, since it uses as much as digits as its factorization.

1312323202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656161603.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1312323202 is about 36226.0017390824. The cubic root of 1312323202 is about 1094.8306214803.

Adding to 1312323202 its reverse (2023232131), we get a palindrome (3335555333).

The spelling of 1312323202 in words is "one billion, three hundred twelve million, three hundred twenty-three thousand, two hundred two".