12011234431 has 8 divisors (see below), whose sum is σ = 13742678144. Its totient is φ = 10283679000.

The previous prime is 12011234393. The next prime is 12011234441. The reversal of 12011234431 is 13443211021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12011234431 - 2⁷ = 12011234303 is a prime.

It is a super-2 number, since 2×12011234431² (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 (12011234441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965445 + ... + 977806.

It is an arithmetic number, because the mean of its divisors is an integer number (1717834768).

Almost surely, 2^12011234431 is an apocalyptic number.

12011234431 is a deficient number, since it is larger than the sum of its proper divisors (1731443713).

12011234431 is an equidigital number, since it uses as much as digits as its factorization.

12011234431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944141.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 12011234431 its reverse (13443211021), we get a palindrome (25454445452).

The spelling of 12011234431 in words is "twelve billion, eleven million, two hundred thirty-four thousand, four hundred thirty-one".