431234221 has 8 divisors (see below), whose sum is σ = 471259584. Its totient is φ = 391345920.

The previous prime is 431234207. The next prime is 431234231. The reversal of 431234221 is 122432134.

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 431234221 - 2²³ = 422845613 is a prime.

It is a super-2 number, since 2×431234221² = 371925906722953682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431234192 and 431234201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431234201) 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, 27625 + ... + 40318.

It is an arithmetic number, because the mean of its divisors is an integer number (58907448).

Almost surely, 2^431234221 is an apocalyptic number.

It is an amenable number.

431234221 is a deficient number, since it is larger than the sum of its proper divisors (40025363).

431234221 is a wasteful number, since it uses less digits than its factorization.

431234221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68531.

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

The square root of 431234221 is about 20766.1797401448. The cubic root of 431234221 is about 755.5056893183.

Adding to 431234221 its reverse (122432134), we get a palindrome (553666355).

The spelling of 431234221 in words is "four hundred thirty-one million, two hundred thirty-four thousand, two hundred twenty-one".