672431213 has 8 divisors (see below), whose sum is σ = 675444000. Its totient is φ = 669425328.

The previous prime is 672431203. The next prime is 672431231. The reversal of 672431213 is 312134276.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 672431213 - 2¹² = 672427117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672431203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298670 + ... + 300912.

It is an arithmetic number, because the mean of its divisors is an integer number (84430500).

Almost surely, 2^672431213 is an apocalyptic number.

It is an amenable number.

672431213 is a deficient number, since it is larger than the sum of its proper divisors (3012787).

672431213 is a wasteful number, since it uses less digits than its factorization.

672431213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451.

The product of its digits is 6048, while the sum is 29.

The square root of 672431213 is about 25931.2786611073. The cubic root of 672431213 is about 876.0911396629.

Adding to 672431213 its reverse (312134276), we get a palindrome (984565489).

The spelling of 672431213 in words is "six hundred seventy-two million, four hundred thirty-one thousand, two hundred thirteen".