431281223 has 2 divisors, whose sum is σ = 431281224. Its totient is φ = 431281222.

The previous prime is 431281219. The next prime is 431281229. The reversal of 431281223 is 322182134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431281223 - 2² = 431281219 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 431281192 and 431281201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (431281229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215640611 + 215640612.

It is an arithmetic number, because the mean of its divisors is an integer number (215640612).

Almost surely, 2^431281223 is an apocalyptic number.

431281223 is a deficient number, since it is larger than the sum of its proper divisors (1).

431281223 is an equidigital number, since it uses as much as digits as its factorization.

431281223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 431281223 is about 20767.3114051868. The cubic root of 431281223 is about 755.5331368837.

The spelling of 431281223 in words is "four hundred thirty-one million, two hundred eighty-one thousand, two hundred twenty-three".