213680269 has 4 divisors (see below), whose sum is σ = 233105760. Its totient is φ = 194254780.

The previous prime is 213680267. The next prime is 213680279. The reversal of 213680269 is 962086312.

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 213680269 - 2¹ = 213680267 is a prime.

It is a super-2 number, since 2×213680269² = 91318514719824722, 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 (213680261) 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, 9712729 + ... + 9712750.

It is an arithmetic number, because the mean of its divisors is an integer number (58276440).

Almost surely, 2^213680269 is an apocalyptic number.

It is an amenable number.

213680269 is a deficient number, since it is larger than the sum of its proper divisors (19425491).

213680269 is a wasteful number, since it uses less digits than its factorization.

213680269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19425490.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 213680269 is about 14617.8065728070. The cubic root of 213680269 is about 597.8443656012.

The spelling of 213680269 in words is "two hundred thirteen million, six hundred eighty thousand, two hundred sixty-nine".