12312203021431 has 16 divisors (see below), whose sum is σ = 12889652428800. Its totient is φ = 11746054454400.

The previous prime is 12312203021423. The next prime is 12312203021473. The reversal of 12312203021431 is 13412030221321.

It is not a de Polignac number, because 12312203021431 - 2³ = 12312203021423 is a prime.

It is a super-2 number, since 2×12312203021431² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12312203021396 and 12312203021405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312203027431) 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, 22374250 + ... + 22917928.

It is an arithmetic number, because the mean of its divisors is an integer number (805603276800).

Almost surely, 2^{12312203021431} is an apocalyptic number.

12312203021431 is a deficient number, since it is larger than the sum of its proper divisors (577449407369).

12312203021431 is a wasteful number, since it uses less digits than its factorization.

12312203021431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554070.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 12312203021431 its reverse (13412030221321), we get a palindrome (25724233242752).

The spelling of 12312203021431 in words is "twelve trillion, three hundred twelve billion, two hundred three million, twenty-one thousand, four hundred thirty-one".