213127769 has 4 divisors (see below), whose sum is σ = 224345040. Its totient is φ = 201910500.

The previous prime is 213127763. The next prime is 213127771. The reversal of 213127769 is 967721312.

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 a cyclic number.

It is not a de Polignac number, because 213127769 - 2⁴ = 213127753 is a prime.

It is a super-2 number, since 2×213127769² = 90846891837834722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213127763) 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, 5608607 + ... + 5608644.

It is an arithmetic number, because the mean of its divisors is an integer number (56086260).

Almost surely, 2^213127769 is an apocalyptic number.

It is an amenable number.

213127769 is a deficient number, since it is larger than the sum of its proper divisors (11217271).

213127769 is a wasteful number, since it uses less digits than its factorization.

213127769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11217270.

The product of its digits is 31752, while the sum is 38.

The square root of 213127769 is about 14598.8961569017. The cubic root of 213127769 is about 597.3286509936.

The spelling of 213127769 in words is "two hundred thirteen million, one hundred twenty-seven thousand, seven hundred sixty-nine".