431203231 has 4 divisors (see below), whose sum is σ = 432329472. Its totient is φ = 430076992.

The previous prime is 431203163. The next prime is 431203247. The reversal of 431203231 is 132302134.

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

It is a cyclic number.

It is not a de Polignac number, because 431203231 - 2¹⁹ = 430678943 is a prime.

It is a super-3 number, since 3×431203231³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431203199 and 431203208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431203631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 562546 + ... + 563311.

It is an arithmetic number, because the mean of its divisors is an integer number (108082368).

Almost surely, 2^431203231 is an apocalyptic number.

431203231 is a deficient number, since it is larger than the sum of its proper divisors (1126241).

431203231 is a wasteful number, since it uses less digits than its factorization.

431203231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126240.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 431203231 is about 20765.4335615705. The cubic root of 431203231 is about 755.4875911240.

Adding to 431203231 its reverse (132302134), we get a palindrome (563505365).

The spelling of 431203231 in words is "four hundred thirty-one million, two hundred three thousand, two hundred thirty-one".