431213201 has 4 divisors (see below), whose sum is σ = 431456832. Its totient is φ = 430969572.

The previous prime is 431213197. The next prime is 431213213. The reversal of 431213201 is 102312134.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 102312134 = 2 ⋅51156067.

It is a cyclic number.

It is not a de Polignac number, because 431213201 - 2² = 431213197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 431213201.

It is not an unprimeable number, because it can be changed into a prime (431213221) 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, 119141 + ... + 122706.

It is an arithmetic number, because the mean of its divisors is an integer number (107864208).

Almost surely, 2^431213201 is an apocalyptic number.

It is an amenable number.

431213201 is a deficient number, since it is larger than the sum of its proper divisors (243631).

431213201 is a wasteful number, since it uses less digits than its factorization.

431213201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243630.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 431213201 is about 20765.6736225917. The cubic root of 431213201 is about 755.4934137097.

Adding to 431213201 its reverse (102312134), we get a palindrome (533525335).

The spelling of 431213201 in words is "four hundred thirty-one million, two hundred thirteen thousand, two hundred one".