1313012203 has 4 divisors (see below), whose sum is σ = 1313298448. Its totient is φ = 1312725960.

The previous prime is 1313012189. The next prime is 1313012231. The reversal of 1313012203 is 3022103131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313012203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1313012243) 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, 136128 + ... + 145453.

It is an arithmetic number, because the mean of its divisors is an integer number (328324612).

Almost surely, 2^1313012203 is an apocalyptic number.

1313012203 is a deficient number, since it is larger than the sum of its proper divisors (286245).

1313012203 is an equidigital number, since it uses as much as digits as its factorization.

1313012203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286244.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1313012203 is about 36235.5102489257. The cubic root of 1313012203 is about 1095.0221920261.

Adding to 1313012203 its reverse (3022103131), we get a palindrome (4335115334).

The spelling of 1313012203 in words is "one billion, three hundred thirteen million, twelve thousand, two hundred three".