263316213 has 24 divisors (see below), whose sum is σ = 420234048. Its totient is φ = 158032512.

The previous prime is 263316197. The next prime is 263316217. The reversal of 263316213 is 312613362.

It is a happy number.

263316213 is a `hidden beast` number, since 2 + 6 + 3 + 31 + 621 + 3 = 666.

It is not a de Polignac number, because 263316213 - 2⁴ = 263316197 is a prime.

It is a super-2 number, since 2×263316213² = 138670856057322738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263316217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33895 + ... + 40932.

It is an arithmetic number, because the mean of its divisors is an integer number (17509752).

Almost surely, 2^263316213 is an apocalyptic number.

263316213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

263316213 is a deficient number, since it is larger than the sum of its proper divisors (156917835).

263316213 is a wasteful number, since it uses less digits than its factorization.

263316213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74873 (or 74870 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 263316213 is about 16227.0210759708. The cubic root of 263316213 is about 640.9525309980.

Adding to 263316213 its reverse (312613362), we get a palindrome (575929575).

The spelling of 263316213 in words is "two hundred sixty-three million, three hundred sixteen thousand, two hundred thirteen".