263115231 has 16 divisors (see below), whose sum is σ = 368342400. Its totient is φ = 166830048.

The previous prime is 263115227. The next prime is 263115233. The reversal of 263115231 is 132511362.

It is not a de Polignac number, because 263115231 - 2² = 263115227 is a prime.

It is a super-2 number, since 2×263115231² = 138459249568366722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263115233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16741 + ... + 28398.

It is an arithmetic number, because the mean of its divisors is an integer number (23021400).

Almost surely, 2^263115231 is an apocalyptic number.

263115231 is a deficient number, since it is larger than the sum of its proper divisors (105227169).

263115231 is a wasteful number, since it uses less digits than its factorization.

263115231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45238.

The product of its digits is 1080, while the sum is 24.

The square root of 263115231 is about 16220.8270750908. The cubic root of 263115231 is about 640.7894156966.

Adding to 263115231 its reverse (132511362), we get a palindrome (395626593).

The spelling of 263115231 in words is "two hundred sixty-three million, one hundred fifteen thousand, two hundred thirty-one".