263187097 has 2 divisors, whose sum is σ = 263187098. Its totient is φ = 263187096.

The previous prime is 263187073. The next prime is 263187139. The reversal of 263187097 is 790781362.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222278281 + 40908816 = 14909^2 + 6396^2 .

It is a cyclic number.

It is not a de Polignac number, because 263187097 - 2⁷ = 263186969 is a prime.

It is not a weakly prime, because it can be changed into another prime (263187007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131593548 + 131593549.

It is an arithmetic number, because the mean of its divisors is an integer number (131593549).

Almost surely, 2^263187097 is an apocalyptic number.

It is an amenable number.

263187097 is a deficient number, since it is larger than the sum of its proper divisors (1).

263187097 is an equidigital number, since it uses as much as digits as its factorization.

263187097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 263187097 is about 16223.0421623073. The cubic root of 263187097 is about 640.8477510755.

The spelling of 263187097 in words is "two hundred sixty-three million, one hundred eighty-seven thousand, ninety-seven".