431342213 has 4 divisors (see below), whose sum is σ = 431686080. Its totient is φ = 430998348.

The previous prime is 431342203. The next prime is 431342227. The reversal of 431342213 is 312243134.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431342213 is a prime.

It is a super-2 number, since 2×431342213² = 372112209431474738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431342203) 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, 170045 + ... + 172562.

It is an arithmetic number, because the mean of its divisors is an integer number (107921520).

Almost surely, 2^431342213 is an apocalyptic number.

It is an amenable number.

431342213 is a deficient number, since it is larger than the sum of its proper divisors (343867).

431342213 is a wasteful number, since it uses less digits than its factorization.

431342213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343866.

The product of its digits is 1728, while the sum is 23.

The square root of 431342213 is about 20768.7797667557. The cubic root of 431342213 is about 755.5687499915.

Adding to 431342213 its reverse (312243134), we get a palindrome (743585347).

The spelling of 431342213 in words is "four hundred thirty-one million, three hundred forty-two thousand, two hundred thirteen".