1423431023 has 16 divisors (see below), whose sum is σ = 1651322880. Its totient is φ = 1201780800.

The previous prime is 1423431019. The next prime is 1423431043. The reversal of 1423431023 is 3201343241.

It is a cyclic number.

It is not a de Polignac number, because 1423431023 - 2² = 1423431019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1423431023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423431043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164618 + ... + 173048.

It is an arithmetic number, because the mean of its divisors is an integer number (103207680).

Almost surely, 2^1423431023 is an apocalyptic number.

1423431023 is a deficient number, since it is larger than the sum of its proper divisors (227891857).

1423431023 is an equidigital number, since it uses as much as digits as its factorization.

1423431023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8798.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1423431023 is about 37728.3848448353. The cubic root of 1423431023 is about 1124.8954037405.

Adding to 1423431023 its reverse (3201343241), we get a palindrome (4624774264).

The spelling of 1423431023 in words is "one billion, four hundred twenty-three million, four hundred thirty-one thousand, twenty-three".