1312002203 has 4 divisors (see below), whose sum is σ = 1347461760. Its totient is φ = 1276542648.

The previous prime is 1312002199. The next prime is 1312002229. The reversal of 1312002203 is 3022002131.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3022002131 = 23 ⋅131391397.

It is a cyclic number.

It is not a de Polignac number, because 1312002203 - 2² = 1312002199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1312001203) 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, 17729723 + ... + 17729796.

It is an arithmetic number, because the mean of its divisors is an integer number (336865440).

Almost surely, 2^1312002203 is an apocalyptic number.

1312002203 is a deficient number, since it is larger than the sum of its proper divisors (35459557).

1312002203 is an equidigital number, since it uses as much as digits as its factorization.

1312002203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35459556.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1312002203 is about 36221.5709626184. The cubic root of 1312002203 is about 1094.7413476915.

Subtracting from 1312002203 its product of nonzero digits (72), we obtain a palindrome (1312002131).

Adding to 1312002203 its reverse (3022002131), we get a palindrome (4334004334).

The spelling of 1312002203 in words is "one billion, three hundred twelve million, two thousand, two hundred three".