263311042 has 4 divisors (see below), whose sum is σ = 394966566. Its totient is φ = 131655520.

The previous prime is 263311033. The next prime is 263311051. The reversal of 263311042 is 240113362.

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

It is an interprime number because it is at equal distance from previous prime (263311033) and next prime (263311051).

It can be written as a sum of positive squares in only one way, i.e., 171898321 + 91412721 = 13111^2 + 9561^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65827759 + ... + 65827762.

Almost surely, 2^263311042 is an apocalyptic number.

263311042 is a deficient number, since it is larger than the sum of its proper divisors (131655524).

263311042 is a wasteful number, since it uses less digits than its factorization.

263311042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131655523.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 263311042 is about 16226.8617421854. The cubic root of 263311042 is about 640.9483352984.

The spelling of 263311042 in words is "two hundred sixty-three million, three hundred eleven thousand, forty-two".