263261013 has 8 divisors (see below), whose sum is σ = 366276288. Its totient is φ = 167876544.

The previous prime is 263261003. The next prime is 263261081. The reversal of 263261013 is 310162362.

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 263261013 - 2⁸ = 263260757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263261003) 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, 1907620 + ... + 1907757.

It is an arithmetic number, because the mean of its divisors is an integer number (45784536).

Almost surely, 2^263261013 is an apocalyptic number.

263261013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

263261013 is a deficient number, since it is larger than the sum of its proper divisors (103015275).

263261013 is a wasteful number, since it uses less digits than its factorization.

263261013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815403.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 263261013 is about 16225.3201201086. The cubic root of 263261013 is about 640.9077394121.

The spelling of 263261013 in words is "two hundred sixty-three million, two hundred sixty-one thousand, thirteen".