263223434 has 4 divisors (see below), whose sum is σ = 394835154. Its totient is φ = 131611716.

The previous prime is 263223407. The next prime is 263223451. The reversal of 263223434 is 434322362.

263223434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 231131209 + 32092225 = 15203^2 + 5665^2 .

It is a junction number, because it is equal to n+sod(n) for n = 263223397 and 263223406.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65805857 + ... + 65805860.

Almost surely, 2^263223434 is an apocalyptic number.

263223434 is a deficient number, since it is larger than the sum of its proper divisors (131611720).

263223434 is a wasteful number, since it uses less digits than its factorization.

263223434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131611719.

The product of its digits is 20736, while the sum is 29.

The square root of 263223434 is about 16224.1620430764. The cubic root of 263223434 is about 640.8772426594.

Adding to 263223434 its reverse (434322362), we get a palindrome (697545796).

The spelling of 263223434 in words is "two hundred sixty-three million, two hundred twenty-three thousand, four hundred thirty-four".