403000023 has 4 divisors (see below), whose sum is σ = 537333368. Its totient is φ = 268666680.

The previous prime is 403000021. The next prime is 403000033. The reversal of 403000023 is 320000304.

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

It is not a de Polignac number, because 403000023 - 2¹ = 403000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 402999972 and 403000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403000021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67166668 + ... + 67166673.

It is an arithmetic number, because the mean of its divisors is an integer number (134333342).

Almost surely, 2^403000023 is an apocalyptic number.

403000023 is a deficient number, since it is larger than the sum of its proper divisors (134333345).

403000023 is a wasteful number, since it uses less digits than its factorization.

403000023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134333344.

The product of its (nonzero) digits is 72, while the sum is 12.

The square root of 403000023 is about 20074.8604727405. The cubic root of 403000023 is about 738.6437435822.

Adding to 403000023 its reverse (320000304), we get a palindrome (723000327).

The spelling of 403000023 in words is "four hundred three million, twenty-three", and thus it is an aban number.