431420123 has 2 divisors, whose sum is σ = 431420124. Its totient is φ = 431420122.

The previous prime is 431420117. The next prime is 431420167. The reversal of 431420123 is 321024134.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 431420123 - 2⁸ = 431419867 is a prime.

It is a super-2 number, since 2×431420123² = 372246645058670258, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 431420095 and 431420104.

It is not a weakly prime, because it can be changed into another prime (431420173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 215710061 + 215710062.

It is an arithmetic number, because the mean of its divisors is an integer number (215710062).

Almost surely, 2^431420123 is an apocalyptic number.

431420123 is a deficient number, since it is larger than the sum of its proper divisors (1).

431420123 is an equidigital number, since it uses as much as digits as its factorization.

431420123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 431420123 is about 20770.6553339080. The cubic root of 431420123 is about 755.6142380948.

Adding to 431420123 its reverse (321024134), we get a palindrome (752444257).

The spelling of 431420123 in words is "four hundred thirty-one million, four hundred twenty thousand, one hundred twenty-three".