213042773 has 4 divisors (see below), whose sum is σ = 213072288. Its totient is φ = 213013260.

The previous prime is 213042701. The next prime is 213042803. The reversal of 213042773 is 377240312.

213042773 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 213042773 - 2⁸ = 213042517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213042173) 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, 4118 + ... + 21048.

It is an arithmetic number, because the mean of its divisors is an integer number (53268072).

Almost surely, 2^213042773 is an apocalyptic number.

It is an amenable number.

213042773 is a deficient number, since it is larger than the sum of its proper divisors (29515).

213042773 is a wasteful number, since it uses less digits than its factorization.

213042773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29514.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 213042773 is about 14595.9848246016. The cubic root of 213042773 is about 597.2492349436.

The spelling of 213042773 in words is "two hundred thirteen million, forty-two thousand, seven hundred seventy-three".