423401403 has 16 divisors (see below), whose sum is σ = 568494080. Its totient is φ = 280295424.

The previous prime is 423401401. The next prime is 423401413. The reversal of 423401403 is 304104324.

It is not a de Polignac number, because 423401403 - 2¹ = 423401401 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 423401403.

It is not an unprimeable number, because it can be changed into a prime (423401401) 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, 514050 + ... + 514872.

It is an arithmetic number, because the mean of its divisors is an integer number (35530880).

Almost surely, 2^423401403 is an apocalyptic number.

423401403 is a deficient number, since it is larger than the sum of its proper divisors (145092677).

423401403 is a wasteful number, since it uses less digits than its factorization.

423401403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 423401403 is about 20576.7199281129. The cubic root of 423401403 is about 750.9034463870.

Adding to 423401403 its reverse (304104324), we get a palindrome (727505727).

The spelling of 423401403 in words is "four hundred twenty-three million, four hundred one thousand, four hundred three".