266226031 has 2 divisors, whose sum is σ = 266226032. Its totient is φ = 266226030.

The previous prime is 266226017. The next prime is 266226053. The reversal of 266226031 is 130622662.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 266226031 - 2¹³ = 266217839 is a prime.

It is a super-2 number, since 2×266226031² = 141752599164025922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (266226071) 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, 133113015 + 133113016.

It is an arithmetic number, because the mean of its divisors is an integer number (133113016).

Almost surely, 2^266226031 is an apocalyptic number.

266226031 is a deficient number, since it is larger than the sum of its proper divisors (1).

266226031 is an equidigital number, since it uses as much as digits as its factorization.

266226031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 266226031 is about 16316.4343837739. The cubic root of 266226031 is about 643.3048700721.

Adding to 266226031 its reverse (130622662), we get a palindrome (396848693).

The spelling of 266226031 in words is "two hundred sixty-six million, two hundred twenty-six thousand, thirty-one".