12403111143 has 4 divisors (see below), whose sum is σ = 16537481528. Its totient is φ = 8268740760.

The previous prime is 12403111139. The next prime is 12403111219. The reversal of 12403111143 is 34111130421.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 12403111143 - 2² = 12403111139 is a prime.

It is a super-2 number, since 2×12403111143² (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 (12403110143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2067185188 + ... + 2067185193.

It is an arithmetic number, because the mean of its divisors is an integer number (4134370382).

Almost surely, 2^12403111143 is an apocalyptic number.

12403111143 is a deficient number, since it is larger than the sum of its proper divisors (4134370385).

12403111143 is an equidigital number, since it uses as much as digits as its factorization.

12403111143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4134370384.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12403111143 its reverse (34111130421), we get a palindrome (46514241564).

The spelling of 12403111143 in words is "twelve billion, four hundred three million, one hundred eleven thousand, one hundred forty-three".