1440230023 has 4 divisors (see below), whose sum is σ = 1486689088. Its totient is φ = 1393770960.

The previous prime is 1440230009. The next prime is 1440230081. The reversal of 1440230023 is 3200320441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1440230023 - 2⁵ = 1440229991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440230423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23229486 + ... + 23229547.

It is an arithmetic number, because the mean of its divisors is an integer number (371672272).

Almost surely, 2^1440230023 is an apocalyptic number.

1440230023 is a deficient number, since it is larger than the sum of its proper divisors (46459065).

1440230023 is an equidigital number, since it uses as much as digits as its factorization.

1440230023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46459064.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1440230023 is about 37950.3626201384. The cubic root of 1440230023 is about 1129.3033592144.

Adding to 1440230023 its reverse (3200320441), we get a palindrome (4640550464).

The spelling of 1440230023 in words is "one billion, four hundred forty million, two hundred thirty thousand, twenty-three".