402431203 has 4 divisors (see below), whose sum is σ = 413307760. Its totient is φ = 391554648.

The previous prime is 402431149. The next prime is 402431209. The reversal of 402431203 is 302134204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402431203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402431209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5438223 + ... + 5438296.

It is an arithmetic number, because the mean of its divisors is an integer number (103326940).

Almost surely, 2^402431203 is an apocalyptic number.

402431203 is a deficient number, since it is larger than the sum of its proper divisors (10876557).

402431203 is a wasteful number, since it uses less digits than its factorization.

402431203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10876556.

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

The square root of 402431203 is about 20060.6879991689. The cubic root of 402431203 is about 738.2960569458.

Adding to 402431203 its reverse (302134204), we get a palindrome (704565407).

The spelling of 402431203 in words is "four hundred two million, four hundred thirty-one thousand, two hundred three".