431140211 has 4 divisors (see below), whose sum is σ = 431468400. Its totient is φ = 430812024.

The previous prime is 431140207. The next prime is 431140249. The reversal of 431140211 is 112041134.

It is a happy number.

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 431140211 - 2² = 431140207 is a prime.

It is a super-2 number, since 2×431140211² = 371763763082249042, which contains 22 as substring.

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 431140211.

It is not an unprimeable number, because it can be changed into a prime (431140271) 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 3 ways as a sum of consecutive naturals, for example, 162116 + ... + 164753.

It is an arithmetic number, because the mean of its divisors is an integer number (107867100).

Almost surely, 2^431140211 is an apocalyptic number.

431140211 is a deficient number, since it is larger than the sum of its proper divisors (328189).

431140211 is a wasteful number, since it uses less digits than its factorization.

431140211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328188.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 431140211 is about 20763.9160805470. The cubic root of 431140211 is about 755.4507846994.

Adding to 431140211 its reverse (112041134), we get a palindrome (543181345).

The spelling of 431140211 in words is "four hundred thirty-one million, one hundred forty thousand, two hundred eleven".