1311310203 has 8 divisors (see below), whose sum is σ = 1998187008. Its totient is φ = 749320104.

The previous prime is 1311310183. The next prime is 1311310207. The reversal of 1311310203 is 3020131131.

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

It is not a de Polignac number, because 1311310203 - 2¹³ = 1311302011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1311310207) 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, 31221651 + ... + 31221692.

It is an arithmetic number, because the mean of its divisors is an integer number (249773376).

Almost surely, 2^1311310203 is an apocalyptic number.

1311310203 is a deficient number, since it is larger than the sum of its proper divisors (686876805).

1311310203 is an equidigital number, since it uses as much as digits as its factorization.

1311310203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62443353.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 1311310203 is about 36212.0173837360. The cubic root of 1311310203 is about 1094.5488443967.

Adding to 1311310203 its reverse (3020131131), we get a palindrome (4331441334).

The spelling of 1311310203 in words is "one billion, three hundred eleven million, three hundred ten thousand, two hundred three".