12240023431 has 2 divisors, whose sum is σ = 12240023432. Its totient is φ = 12240023430.

The previous prime is 12240023387. The next prime is 12240023449. The reversal of 12240023431 is 13432004221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12240023431 - 2⁷ = 12240023303 is a prime.

It is a super-3 number, since 3×12240023431³ (a number of 31 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12240023461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6120011715 + 6120011716.

It is an arithmetic number, because the mean of its divisors is an integer number (6120011716).

Almost surely, 2^12240023431 is an apocalyptic number.

12240023431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12240023431 is an equidigital number, since it uses as much as digits as its factorization.

12240023431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 12240023431 its reverse (13432004221), we get a palindrome (25672027652).

The spelling of 12240023431 in words is "twelve billion, two hundred forty million, twenty-three thousand, four hundred thirty-one".