263291 has 8 divisors (see below), whose sum is σ = 311520. Its totient is φ = 217728.

The previous prime is 263287. The next prime is 263293. The reversal of 263291 is 192362.

263291 is nontrivially palindromic in base 6.

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

It is not a de Polignac number, because 263291 - 2² = 263287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 263291.

It is not an unprimeable number, because it can be changed into a prime (263293) 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, 446 + ... + 851.

It is an arithmetic number, because the mean of its divisors is an integer number (38940).

2²⁶³²⁹¹ is an apocalyptic number.

263291 is a deficient number, since it is larger than the sum of its proper divisors (48229).

263291 is a wasteful number, since it uses less digits than its factorization.

263291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333.

The product of its digits is 648, while the sum is 23.

The square root of 263291 is about 513.1188946044. The cubic root of 263291 is about 64.0932072893.

The spelling of 263291 in words is "two hundred sixty-three thousand, two hundred ninety-one".