12423313431 has 48 divisors (see below), whose sum is σ = 19268181504. Its totient is φ = 7685851392.

The previous prime is 12423313429. The next prime is 12423313501. The reversal of 12423313431 is 13431332421.

It is a happy number.

It is not a de Polignac number, because 12423313431 - 2¹ = 12423313429 is a prime.

It is a super-2 number, since 2×12423313431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12423313395 and 12423313404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12423313411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3714546 + ... + 3717888.

It is an arithmetic number, because the mean of its divisors is an integer number (401420448).

Almost surely, 2^12423313431 is an apocalyptic number.

12423313431 is a deficient number, since it is larger than the sum of its proper divisors (6844868073).

12423313431 is a wasteful number, since it uses less digits than its factorization.

12423313431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700 (or 3697 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

Adding to 12423313431 its reverse (13431332421), we get a palindrome (25854645852).

The spelling of 12423313431 in words is "twelve billion, four hundred twenty-three million, three hundred thirteen thousand, four hundred thirty-one".