12131431433 has 16 divisors (see below), whose sum is σ = 13320182400. Its totient is φ = 10957161600.

The previous prime is 12131431381. The next prime is 12131431439. The reversal of 12131431433 is 33413413121.

It is not a de Polignac number, because 12131431433 - 2⁶ = 12131431369 is a prime.

It is a super-2 number, since 2×12131431433² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12131431439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1653413 + ... + 1660733.

It is an arithmetic number, because the mean of its divisors is an integer number (832511400).

Almost surely, 2^12131431433 is an apocalyptic number.

It is an amenable number.

12131431433 is a deficient number, since it is larger than the sum of its proper divisors (1188750967).

12131431433 is a wasteful number, since it uses less digits than its factorization.

12131431433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8288.

The product of its digits is 2592, while the sum is 26.

Adding to 12131431433 its reverse (33413413121), we get a palindrome (45544844554).

The spelling of 12131431433 in words is "twelve billion, one hundred thirty-one million, four hundred thirty-one thousand, four hundred thirty-three".