431213212 has 6 divisors (see below), whose sum is σ = 754623128. Its totient is φ = 215606604.

The previous prime is 431213197. The next prime is 431213213. The reversal of 431213212 is 212312134.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 431213212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431213213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53901648 + ... + 53901655.

Almost surely, 2^431213212 is an apocalyptic number.

It is an amenable number.

431213212 is a deficient number, since it is larger than the sum of its proper divisors (323409916).

431213212 is a wasteful number, since it uses less digits than its factorization.

431213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107803307 (or 107803305 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 431213212 is about 20765.6738874519. The cubic root of 431213212 is about 755.4934201337.

Adding to 431213212 its reverse (212312134), we get a palindrome (643525346).

The spelling of 431213212 in words is "four hundred thirty-one million, two hundred thirteen thousand, two hundred twelve".