11312012343 has 4 divisors (see below), whose sum is σ = 15082683128. Its totient is φ = 7541341560.

The previous prime is 11312012303. The next prime is 11312012419. The reversal of 11312012343 is 34321021311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34321021311 = 3 ⋅11440340437.

It is not a de Polignac number, because 11312012343 - 2⁸ = 11312012087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312012303) 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 3 ways as a sum of consecutive naturals, for example, 1885335388 + ... + 1885335393.

It is an arithmetic number, because the mean of its divisors is an integer number (3770670782).

Almost surely, 2^11312012343 is an apocalyptic number.

11312012343 is a deficient number, since it is larger than the sum of its proper divisors (3770670785).

11312012343 is an equidigital number, since it uses as much as digits as its factorization.

11312012343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3770670784.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 11312012343 its reverse (34321021311), we get a palindrome (45633033654).

The spelling of 11312012343 in words is "eleven billion, three hundred twelve million, twelve thousand, three hundred forty-three".