423140431 has 12 divisors (see below), whose sum is σ = 518132280. Its totient is φ = 343602000.

The previous prime is 423140423. The next prime is 423140447. The reversal of 423140431 is 134041324.

It is not a de Polignac number, because 423140431 - 2³ = 423140423 is a prime.

It is a super-2 number, since 2×423140431² = 358095648693731522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423140401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226320 + ... + 228181.

It is an arithmetic number, because the mean of its divisors is an integer number (43177690).

Almost surely, 2^423140431 is an apocalyptic number.

423140431 is a deficient number, since it is larger than the sum of its proper divisors (94991849).

423140431 is a wasteful number, since it uses less digits than its factorization.

423140431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454534 (or 454527 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 423140431 is about 20570.3775123355. The cubic root of 423140431 is about 750.7491365139.

Adding to 423140431 its reverse (134041324), we get a palindrome (557181755).

The spelling of 423140431 in words is "four hundred twenty-three million, one hundred forty thousand, four hundred thirty-one".