265431 has 8 divisors (see below), whose sum is σ = 357760. Its totient is φ = 175032.

The previous prime is 265427. The next prime is 265451. The reversal of 265431 is 134562.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 265431 - 2² = 265427 is a prime.

It is a super-2 number, since 2×265431² = 140907231522, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2⁷ + 6 + 4⁹ + 5⁵ + 3³ + 1 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 265398 and 265407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121 + ... + 738.

It is an arithmetic number, because the mean of its divisors is an integer number (44720).

2²⁶⁵⁴³¹ is an apocalyptic number.

265431 is a deficient number, since it is larger than the sum of its proper divisors (92329).

265431 is a wasteful number, since it uses less digits than its factorization.

265431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965.

The product of its digits is 720, while the sum is 21.

The square root of 265431 is about 515.1999611801. The cubic root of 265431 is about 64.2663864294.

Adding to 265431 its reverse (134562), we get a palindrome (399993).

It can be divided in two parts, 265 and 431, that added together give a palindrome (696).

The spelling of 265431 in words is "two hundred sixty-five thousand, four hundred thirty-one".