12020431 has 2 divisors, whose sum is σ = 12020432. Its totient is φ = 12020430.

The previous prime is 12020417. The next prime is 12020441. The reversal of 12020431 is 13402021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12020431 - 2¹⁹ = 11496143 is a prime.

It is a super-2 number, since 2×12020431² = 288981522851522, 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 (12020441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010215 + 6010216.

It is an arithmetic number, because the mean of its divisors is an integer number (6010216).

Almost surely, 2^12020431 is an apocalyptic number.

12020431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12020431 is an equidigital number, since it uses as much as digits as its factorization.

12020431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12020431 is about 3467.0493218297. The cubic root of 12020431 is about 229.0727062667.

Adding to 12020431 its reverse (13402021), we get a palindrome (25422452).

The spelling of 12020431 in words is "twelve million, twenty thousand, four hundred thirty-one".