12120431 has 2 divisors, whose sum is σ = 12120432. Its totient is φ = 12120430.

The previous prime is 12120419. The next prime is 12120443. The reversal of 12120431 is 13402121.

It is a balanced prime because it is at equal distance from previous prime (12120419) and next prime (12120443).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12120431 is a prime.

It is a super-2 number, since 2×12120431² = 293809695251522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060215 + 6060216.

It is an arithmetic number, because the mean of its divisors is an integer number (6060216).

Almost surely, 2^12120431 is an apocalyptic number.

12120431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120431 is an equidigital number, since it uses as much as digits as its factorization.

12120431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12120431 is about 3481.4409373132. The cubic root of 12120431 is about 229.7061843686.

Adding to 12120431 its reverse (13402121), we get a palindrome (25522552).

The spelling of 12120431 in words is "twelve million, one hundred twenty thousand, four hundred thirty-one".