263312573 has 2 divisors, whose sum is σ = 263312574. Its totient is φ = 263312572.

The previous prime is 263312561. The next prime is 263312587. The reversal of 263312573 is 375213362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235991044 + 27321529 = 15362^2 + 5227^2 .

It is a cyclic number.

It is not a de Polignac number, because 263312573 - 2⁴ = 263312557 is a prime.

It is a super-2 number, since 2×263312573² = 138667022199760658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263312593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131656286 + 131656287.

It is an arithmetic number, because the mean of its divisors is an integer number (131656287).

Almost surely, 2^263312573 is an apocalyptic number.

It is an amenable number.

263312573 is a deficient number, since it is larger than the sum of its proper divisors (1).

263312573 is an equidigital number, since it uses as much as digits as its factorization.

263312573 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 32.

The square root of 263312573 is about 16226.9089169811. The cubic root of 263312573 is about 640.9495775428.

The spelling of 263312573 in words is "two hundred sixty-three million, three hundred twelve thousand, five hundred seventy-three".