11312121303 has 48 divisors (see below), whose sum is σ = 19853683200. Its totient is φ = 6066320832.

The previous prime is 11312121299. The next prime is 11312121313. The reversal of 11312121303 is 30312121311.

It is not a de Polignac number, because 11312121303 - 2² = 11312121299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312121313) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3148 + ... + 150446.

It is an arithmetic number, because the mean of its divisors is an integer number (413618400).

Almost surely, 2^11312121303 is an apocalyptic number.

11312121303 is a deficient number, since it is larger than the sum of its proper divisors (8541561897).

11312121303 is a wasteful number, since it uses less digits than its factorization.

11312121303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147388 (or 147385 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 11312121303 its reverse (30312121311), we get a palindrome (41624242614).

The spelling of 11312121303 in words is "eleven billion, three hundred twelve million, one hundred twenty-one thousand, three hundred three".