263134009 has 2 divisors, whose sum is σ = 263134010. Its totient is φ = 263134008.

The previous prime is 263133977. The next prime is 263134013. The reversal of 263134009 is 900431362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186186025 + 76947984 = 13645^2 + 8772^2 .

It is a cyclic number.

It is not a de Polignac number, because 263134009 - 2⁵ = 263133977 is a prime.

It is not a weakly prime, because it can be changed into another prime (263134019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131567004 + 131567005.

It is an arithmetic number, because the mean of its divisors is an integer number (131567005).

Almost surely, 2^263134009 is an apocalyptic number.

It is an amenable number.

263134009 is a deficient number, since it is larger than the sum of its proper divisors (1).

263134009 is an equidigital number, since it uses as much as digits as its factorization.

263134009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 263134009 is about 16221.4058885166. The cubic root of 263134009 is about 640.8046592806.

The spelling of 263134009 in words is "two hundred sixty-three million, one hundred thirty-four thousand, nine".