431030213 has 4 divisors (see below), whose sum is σ = 431071788. Its totient is φ = 430988640.

The previous prime is 431030207. The next prime is 431030261. The reversal of 431030213 is 312030134.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 187607809 + 243422404 = 13697^2 + 15602^2 .

It is a cyclic number.

It is not a de Polignac number, because 431030213 - 2⁸ = 431029957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 431030191 and 431030200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431030203) 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, 8843 + ... + 30663.

It is an arithmetic number, because the mean of its divisors is an integer number (107767947).

Almost surely, 2^431030213 is an apocalyptic number.

It is an amenable number.

431030213 is a deficient number, since it is larger than the sum of its proper divisors (41575).

431030213 is a wasteful number, since it uses less digits than its factorization.

431030213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41574.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 431030213 is about 20761.2671337758. The cubic root of 431030213 is about 755.3865324822.

Adding to 431030213 its reverse (312030134), we get a palindrome (743060347).

The spelling of 431030213 in words is "four hundred thirty-one million, thirty thousand, two hundred thirteen".