213236269 has 4 divisors (see below), whose sum is σ = 218195296. Its totient is φ = 208277244.

The previous prime is 213236263. The next prime is 213236273. The reversal of 213236269 is 962632312.

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 213236269 - 2⁵ = 213236237 is a prime.

It is a super-2 number, since 2×213236269² = 90939412834080722, 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 (213236263) 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, 2479449 + ... + 2479534.

It is an arithmetic number, because the mean of its divisors is an integer number (54548824).

Almost surely, 2^213236269 is an apocalyptic number.

It is an amenable number.

213236269 is a deficient number, since it is larger than the sum of its proper divisors (4959027).

213236269 is an equidigital number, since it uses as much as digits as its factorization.

213236269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4959026.

The product of its digits is 23328, while the sum is 34.

The square root of 213236269 is about 14602.6117184564. The cubic root of 213236269 is about 597.4299973426.

The spelling of 213236269 in words is "two hundred thirteen million, two hundred thirty-six thousand, two hundred sixty-nine".