213944061 has 4 divisors (see below), whose sum is σ = 285258752. Its totient is φ = 142629372.

The previous prime is 213944023. The next prime is 213944063. The reversal of 213944061 is 160449312.

213944061 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 213944061 - 2⁹ = 213943549 is a prime.

It is a super-2 number, since 2×213944061² = 91544122474343442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213944063) 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, 35657341 + ... + 35657346.

It is an arithmetic number, because the mean of its divisors is an integer number (71314688).

Almost surely, 2^213944061 is an apocalyptic number.

It is an amenable number.

213944061 is a deficient number, since it is larger than the sum of its proper divisors (71314691).

213944061 is an equidigital number, since it uses as much as digits as its factorization.

213944061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71314690.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 213944061 is about 14626.8267577079. The cubic root of 213944061 is about 598.0902808479.

The spelling of 213944061 in words is "two hundred thirteen million, nine hundred forty-four thousand, sixty-one".