263040311234 has 4 divisors (see below), whose sum is σ = 394560466854. Its totient is φ = 131520155616.

The previous prime is 263040311221. The next prime is 263040311239. The reversal of 263040311234 is 432113040362.

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., 159398167009 + 103642144225 = 399247^2 + 321935^2 .

It is a junction number, because it is equal to n+sod(n) for n = 263040311197 and 263040311206.

It is not an unprimeable number, because it can be changed into a prime (263040311239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65760077807 + ... + 65760077810.

Almost surely, 2^263040311234 is an apocalyptic number.

263040311234 is a deficient number, since it is larger than the sum of its proper divisors (131520155620).

263040311234 is a wasteful number, since it uses less digits than its factorization.

263040311234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131520155619.

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

Adding to 263040311234 its reverse (432113040362), we get a palindrome (695153351596).

The spelling of 263040311234 in words is "two hundred sixty-three billion, forty million, three hundred eleven thousand, two hundred thirty-four".