213712801 has 4 divisors (see below), whose sum is σ = 217745172. Its totient is φ = 209680432.

The previous prime is 213712783. The next prime is 213712813. The reversal of 213712801 is 108217312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 192099600 + 21613201 = 13860^2 + 4649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213712801 is a prime.

It is a super-3 number, since 3×213712801³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213712871) 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, 2016106 + ... + 2016211.

It is an arithmetic number, because the mean of its divisors is an integer number (54436293).

Almost surely, 2^213712801 is an apocalyptic number.

It is an amenable number.

213712801 is a deficient number, since it is larger than the sum of its proper divisors (4032371).

213712801 is an equidigital number, since it uses as much as digits as its factorization.

213712801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4032370.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 213712801 is about 14618.9192829019. The cubic root of 213712801 is about 597.8747038976.

The spelling of 213712801 in words is "two hundred thirteen million, seven hundred twelve thousand, eight hundred one".