431428407 has 8 divisors (see below), whose sum is σ = 576025584. Its totient is φ = 287225088.

The previous prime is 431428391. The next prime is 431428429. The reversal of 431428407 is 704824134.

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

It is not a de Polignac number, because 431428407 - 2⁴ = 431428391 is a prime.

It is a super-2 number, since 2×431428407² = 372260940733115298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431428507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95898 + ... + 100295.

It is an arithmetic number, because the mean of its divisors is an integer number (72003198).

Almost surely, 2^431428407 is an apocalyptic number.

431428407 is a deficient number, since it is larger than the sum of its proper divisors (144597177).

431428407 is a wasteful number, since it uses less digits than its factorization.

431428407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196929.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 431428407 is about 20770.8547489024. The cubic root of 431428407 is about 755.6190744233.

The spelling of 431428407 in words is "four hundred thirty-one million, four hundred twenty-eight thousand, four hundred seven".