403043023 has 4 divisors (see below), whose sum is σ = 405294840. Its totient is φ = 400791208.

The previous prime is 403042979. The next prime is 403043027. The reversal of 403043023 is 320340304.

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 403043023 - 2²¹ = 400945871 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 (403043027) 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, 1125640 + ... + 1125997.

It is an arithmetic number, because the mean of its divisors is an integer number (101323710).

Almost surely, 2^403043023 is an apocalyptic number.

403043023 is a deficient number, since it is larger than the sum of its proper divisors (2251817).

403043023 is a wasteful number, since it uses less digits than its factorization.

403043023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251816.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 403043023 is about 20075.9314354278. The cubic root of 403043023 is about 738.6700136811.

Adding to 403043023 its reverse (320340304), we get a palindrome (723383327).

The spelling of 403043023 in words is "four hundred three million, forty-three thousand, twenty-three".