265531223 has 4 divisors (see below), whose sum is σ = 265843368. Its totient is φ = 265219080.

The previous prime is 265531199. The next prime is 265531237. The reversal of 265531223 is 322135562.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 265531223 - 2²² = 261336919 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265531243) 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, 154793 + ... + 156498.

It is an arithmetic number, because the mean of its divisors is an integer number (66460842).

Almost surely, 2^265531223 is an apocalyptic number.

265531223 is a deficient number, since it is larger than the sum of its proper divisors (312145).

265531223 is an equidigital number, since it uses as much as digits as its factorization.

265531223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312144.

The product of its digits is 10800, while the sum is 29.

The square root of 265531223 is about 16295.1288120100. The cubic root of 265531223 is about 642.7447410511.

Adding to 265531223 its reverse (322135562), we get a palindrome (587666785).

The spelling of 265531223 in words is "two hundred sixty-five million, five hundred thirty-one thousand, two hundred twenty-three".