12403213431 has 8 divisors (see below), whose sum is σ = 18900134784. Its totient is φ = 7087550520.

The previous prime is 12403213423. The next prime is 12403213469. The reversal of 12403213431 is 13431230421.

It is a happy number.

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

It is not a de Polignac number, because 12403213431 - 2³ = 12403213423 is a prime.

It is a super-2 number, since 2×12403213431² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12403213531) 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, 295314585 + ... + 295314626.

It is an arithmetic number, because the mean of its divisors is an integer number (2362516848).

Almost surely, 2^12403213431 is an apocalyptic number.

12403213431 is a deficient number, since it is larger than the sum of its proper divisors (6496921353).

12403213431 is an equidigital number, since it uses as much as digits as its factorization.

12403213431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590629221.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 12403213431 its reverse (13431230421), we get a palindrome (25834443852).

The spelling of 12403213431 in words is "twelve billion, four hundred three million, two hundred thirteen thousand, four hundred thirty-one".