1311402203 has 4 divisors (see below), whose sum is σ = 1311882000. Its totient is φ = 1310922408.

The previous prime is 1311402119. The next prime is 1311402221. The reversal of 1311402203 is 3022041131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3022041131 = 11953 ⋅252827.

It is a cyclic number.

It is not a de Polignac number, because 1311402203 - 2¹⁴ = 1311385819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1311405203) 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, 235775 + ... + 241272.

It is an arithmetic number, because the mean of its divisors is an integer number (327970500).

Almost surely, 2^1311402203 is an apocalyptic number.

1311402203 is a deficient number, since it is larger than the sum of its proper divisors (479797).

1311402203 is an equidigital number, since it uses as much as digits as its factorization.

1311402203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479796.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1311402203 is about 36213.2876579854. The cubic root of 1311402203 is about 1094.5744412231.

Adding to 1311402203 its reverse (3022041131), we get a palindrome (4333443334).

The spelling of 1311402203 in words is "one billion, three hundred eleven million, four hundred two thousand, two hundred three".