263940312 has 16 divisors (see below), whose sum is σ = 659850840. Its totient is φ = 87980096.

The previous prime is 263940307. The next prime is 263940319. The reversal of 263940312 is 213049362.

It is a self number, because there is not a number n which added to its sum of digits gives 263940312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263940319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5498733 + ... + 5498780.

Almost surely, 2^263940312 is an apocalyptic number.

It is an amenable number.

263940312 is an abundant number, since it is smaller than the sum of its proper divisors (395910528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

263940312 is a wasteful number, since it uses less digits than its factorization.

263940312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10997522 (or 10997518 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 263940312 is about 16246.2399342125. The cubic root of 263940312 is about 641.4585160650.

Adding to 263940312 its reverse (213049362), we get a palindrome (476989674).

The spelling of 263940312 in words is "two hundred sixty-three million, nine hundred forty thousand, three hundred twelve".