11312012133 has 24 divisors (see below), whose sum is σ = 16558214400. Its totient is φ = 7440567264.

The previous prime is 11312012119. The next prime is 11312012167. The reversal of 11312012133 is 33121021311.

It is not a de Polignac number, because 11312012133 - 2⁸ = 11312011877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312012233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1159048 + ... + 1168766.

It is an arithmetic number, because the mean of its divisors is an integer number (689925600).

Almost surely, 2^11312012133 is an apocalyptic number.

It is an amenable number.

11312012133 is a deficient number, since it is larger than the sum of its proper divisors (5246202267).

11312012133 is a wasteful number, since it uses less digits than its factorization.

11312012133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11441 (or 11438 counting only the distinct ones).

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

Adding to 11312012133 its reverse (33121021311), we get a palindrome (44433033444).

The spelling of 11312012133 in words is "eleven billion, three hundred twelve million, twelve thousand, one hundred thirty-three".