213273447 has 8 divisors (see below), whose sum is σ = 284758656. Its totient is φ = 141985272.

The previous prime is 213273413. The next prime is 213273469. The reversal of 213273447 is 744372312.

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

It is not a de Polignac number, because 213273447 - 2¹⁴ = 213257063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213273407) 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, 46713 + ... + 51074.

It is an arithmetic number, because the mean of its divisors is an integer number (35594832).

Almost surely, 2^213273447 is an apocalyptic number.

213273447 is a deficient number, since it is larger than the sum of its proper divisors (71485209).

213273447 is an equidigital number, since it uses as much as digits as its factorization.

213273447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98517.

The product of its digits is 28224, while the sum is 33.

The square root of 213273447 is about 14603.8846544336. The cubic root of 213273447 is about 597.4647162045.

The spelling of 213273447 in words is "two hundred thirteen million, two hundred seventy-three thousand, four hundred forty-seven".