213941617 has 4 divisors (see below), whose sum is σ = 226526436. Its totient is φ = 201356800.

The previous prime is 213941599. The next prime is 213941621. The reversal of 213941617 is 716149312.

213941617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 135512881 + 78428736 = 11641^2 + 8856^2 .

It is a cyclic number.

It is not a de Polignac number, because 213941617 - 2²³ = 205553009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213941677) 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, 6292384 + ... + 6292417.

It is an arithmetic number, because the mean of its divisors is an integer number (56631609).

Almost surely, 2^213941617 is an apocalyptic number.

It is an amenable number.

213941617 is a deficient number, since it is larger than the sum of its proper divisors (12584819).

213941617 is a wasteful number, since it uses less digits than its factorization.

213941617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12584818.

The product of its digits is 9072, while the sum is 34.

The square root of 213941617 is about 14626.7432123491. The cubic root of 213941617 is about 598.0880034018.

The spelling of 213941617 in words is "two hundred thirteen million, nine hundred forty-one thousand, six hundred seventeen".