431423 has 2 divisors, whose sum is σ = 431424. Its totient is φ = 431422.

The previous prime is 431399. The next prime is 431429. The reversal of 431423 is 324134.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 431423 - 2¹² = 427327 is a prime.

It is a super-2 number, since 2×431423² = 372251609858, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215711 + 215712.

It is an arithmetic number, because the mean of its divisors is an integer number (215712).

2⁴³¹⁴²³ is an apocalyptic number.

431423 is a deficient number, since it is larger than the sum of its proper divisors (1).

431423 is an equidigital number, since it uses as much as digits as its factorization.

431423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 17.

The square root of 431423 is about 656.8279835695. The cubic root of 431423 is about 75.5615917739.

Adding to 431423 its reverse (324134), we get a palindrome (755557).

The spelling of 431423 in words is "four hundred thirty-one thousand, four hundred twenty-three".