213100993 has 8 divisors (see below), whose sum is σ = 244451520. Its totient is φ = 181977360.

The previous prime is 213100931. The next prime is 213100997. The reversal of 213100993 is 399001312.

213100993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213100993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213100997) 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, 54703 + ... + 58468.

It is an arithmetic number, because the mean of its divisors is an integer number (30556440).

Almost surely, 2^213100993 is an apocalyptic number.

It is an amenable number.

213100993 is a deficient number, since it is larger than the sum of its proper divisors (31350527).

213100993 is a wasteful number, since it uses less digits than its factorization.

213100993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113447.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 213100993 is about 14597.9790724607. The cubic root of 213100993 is about 597.3036351047.

The spelling of 213100993 in words is "two hundred thirteen million, one hundred thousand, nine hundred ninety-three".