12311031303 has 6 divisors (see below), whose sum is σ = 17782600784. Its totient is φ = 8207354196.

The previous prime is 12311031283. The next prime is 12311031307. The reversal of 12311031303 is 30313011321.

It is a happy number.

It is not a de Polignac number, because 12311031303 - 2³³ = 3721096711 is a prime.

It is a super-2 number, since 2×12311031303² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311031307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 683946175 + ... + 683946192.

Almost surely, 2^12311031303 is an apocalyptic number.

12311031303 is a deficient number, since it is larger than the sum of its proper divisors (5471569481).

12311031303 is a wasteful number, since it uses less digits than its factorization.

12311031303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367892373 (or 1367892370 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 12311031303 its reverse (30313011321), we get a palindrome (42624042624).

The spelling of 12311031303 in words is "twelve billion, three hundred eleven million, thirty-one thousand, three hundred three".