265163231 has 4 divisors (see below), whose sum is σ = 266943000. Its totient is φ = 263383464.

The previous prime is 265163219. The next prime is 265163233. The reversal of 265163231 is 132361562.

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 265163231 - 2⁶ = 265163167 is a prime.

It is a super-2 number, since 2×265163231² = 140623078148718722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 265163194 and 265163203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265163233) 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, 889661 + ... + 889958.

It is an arithmetic number, because the mean of its divisors is an integer number (66735750).

Almost surely, 2^265163231 is an apocalyptic number.

265163231 is a deficient number, since it is larger than the sum of its proper divisors (1779769).

265163231 is a wasteful number, since it uses less digits than its factorization.

265163231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1779768.

The product of its digits is 6480, while the sum is 29.

The square root of 265163231 is about 16283.8334245963. The cubic root of 265163231 is about 642.4476833660.

The spelling of 265163231 in words is "two hundred sixty-five million, one hundred sixty-three thousand, two hundred thirty-one".