431421239 has 8 divisors (see below), whose sum is σ = 454895280. Its totient is φ = 408024000.

The previous prime is 431421227. The next prime is 431421259. The reversal of 431421239 is 932124134.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431421239 is a prime.

It is a super-2 number, since 2×431421239² = 372248570920590242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431421209) 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, 7472 + ... + 30309.

It is an arithmetic number, because the mean of its divisors is an integer number (56861910).

Almost surely, 2^431421239 is an apocalyptic number.

431421239 is a deficient number, since it is larger than the sum of its proper divisors (23474041).

431421239 is a wasteful number, since it uses less digits than its factorization.

431421239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38401.

The product of its digits is 5184, while the sum is 29.

The square root of 431421239 is about 20770.6821987146. The cubic root of 431421239 is about 755.6148896366.

The spelling of 431421239 in words is "four hundred thirty-one million, four hundred twenty-one thousand, two hundred thirty-nine".