203402401423 has 8 divisors (see below), whose sum is σ = 219109418528. Its totient is φ = 187704052704.

The previous prime is 203402401403. The next prime is 203402401439. The reversal of 203402401423 is 324104204302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203402401423 - 2²⁵ = 203368846991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203402401403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2118315 + ... + 2212252.

It is an arithmetic number, because the mean of its divisors is an integer number (27388677316).

Almost surely, 2^203402401423 is an apocalyptic number.

203402401423 is a deficient number, since it is larger than the sum of its proper divisors (15707017105).

203402401423 is a wasteful number, since it uses less digits than its factorization.

203402401423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4334193.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 203402401423 its reverse (324104204302), we get a palindrome (527506605725).

The spelling of 203402401423 in words is "two hundred three billion, four hundred two million, four hundred one thousand, four hundred twenty-three".