263242361 has 4 divisors (see below), whose sum is σ = 268209252. Its totient is φ = 258275472.

The previous prime is 263242351. The next prime is 263242387. The reversal of 263242361 is 163242362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79477225 + 183765136 = 8915^2 + 13556^2 .

It is a cyclic number.

It is not a de Polignac number, because 263242361 - 2¹⁰ = 263241337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263242351) 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, 2483366 + ... + 2483471.

It is an arithmetic number, because the mean of its divisors is an integer number (67052313).

Almost surely, 2^263242361 is an apocalyptic number.

It is an amenable number.

263242361 is a deficient number, since it is larger than the sum of its proper divisors (4966891).

263242361 is an equidigital number, since it uses as much as digits as its factorization.

263242361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4966890.

The product of its digits is 10368, while the sum is 29.

The square root of 263242361 is about 16224.7453292802. The cubic root of 263242361 is about 640.8926029849.

Subtracting from 263242361 its reverse (163242362), we obtain a palindrome (99999999).

The spelling of 263242361 in words is "two hundred sixty-three million, two hundred forty-two thousand, three hundred sixty-one".