265323397 has 4 divisors (see below), whose sum is σ = 265468896. Its totient is φ = 265177900.

The previous prime is 265323371. The next prime is 265323439. The reversal of 265323397 is 793323562.

It is a happy number.

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 265323397 - 2⁷ = 265323269 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265323307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69979 + ... + 73672.

It is an arithmetic number, because the mean of its divisors is an integer number (66367224).

Almost surely, 2^265323397 is an apocalyptic number.

It is an amenable number.

265323397 is a deficient number, since it is larger than the sum of its proper divisors (145499).

265323397 is a wasteful number, since it uses less digits than its factorization.

265323397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145498.

The product of its digits is 204120, while the sum is 40.

The square root of 265323397 is about 16288.7506273502. The cubic root of 265323397 is about 642.5770094474.

It can be divided in two parts, 26532 and 3397, that added together give a square (29929 = 173²).

The spelling of 265323397 in words is "two hundred sixty-five million, three hundred twenty-three thousand, three hundred ninety-seven".