263315539 has 2 divisors, whose sum is σ = 263315540. Its totient is φ = 263315538.

The previous prime is 263315473. The next prime is 263315587. The reversal of 263315539 is 935513362.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 263315539 - 2⁹ = 263315027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 263315498 and 263315507.

It is not a weakly prime, because it can be changed into another prime (263315639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131657769 + 131657770.

It is an arithmetic number, because the mean of its divisors is an integer number (131657770).

Almost surely, 2^263315539 is an apocalyptic number.

263315539 is a deficient number, since it is larger than the sum of its proper divisors (1).

263315539 is an equidigital number, since it uses as much as digits as its factorization.

263315539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72900, while the sum is 37.

The square root of 263315539 is about 16227.0003081284. Note that the first 3 decimals coincide. The cubic root of 263315539 is about 640.9519841240.

The spelling of 263315539 in words is "two hundred sixty-three million, three hundred fifteen thousand, five hundred thirty-nine".