12310031421 has 24 divisors (see below), whose sum is σ = 17951903424. Its totient is φ = 8128236480.

The previous prime is 12310031417. The next prime is 12310031431. The reversal of 12310031421 is 12413001321.

It is not a de Polignac number, because 12310031421 - 2² = 12310031417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12310031394 and 12310031403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12310031401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407770 + ... + 436916.

It is an arithmetic number, because the mean of its divisors is an integer number (747995976).

Almost surely, 2^12310031421 is an apocalyptic number.

It is an amenable number.

12310031421 is a deficient number, since it is larger than the sum of its proper divisors (5641872003).

12310031421 is a wasteful number, since it uses less digits than its factorization.

12310031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29601 (or 29598 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12310031421 its reverse (12413001321), we get a palindrome (24723032742).

The spelling of 12310031421 in words is "twelve billion, three hundred ten million, thirty-one thousand, four hundred twenty-one".