213705361 has 4 divisors (see below), whose sum is σ = 213757924. Its totient is φ = 213652800.

The previous prime is 213705353. The next prime is 213705367. The reversal of 213705361 is 163507312.

213705361 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 119246400 + 94458961 = 10920^2 + 9719^2 .

It is a cyclic number.

It is not a de Polignac number, because 213705361 - 2³ = 213705353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213705367) 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, 19620 + ... + 28501.

It is an arithmetic number, because the mean of its divisors is an integer number (53439481).

Almost surely, 2^213705361 is an apocalyptic number.

It is an amenable number.

213705361 is a deficient number, since it is larger than the sum of its proper divisors (52563).

213705361 is an equidigital number, since it uses as much as digits as its factorization.

213705361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52562.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 213705361 is about 14618.6648159126. The cubic root of 213705361 is about 597.8677658645.

The spelling of 213705361 in words is "two hundred thirteen million, seven hundred five thousand, three hundred sixty-one".