264690331 has 2 divisors, whose sum is σ = 264690332. Its totient is φ = 264690330.

The previous prime is 264690281. The next prime is 264690353. The reversal of 264690331 is 133096462.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264690331 - 2⁷ = 264690203 is a prime.

It is a super-3 number, since 3×264690331³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (264690031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132345165 + 132345166.

It is an arithmetic number, because the mean of its divisors is an integer number (132345166).

Almost surely, 2^264690331 is an apocalyptic number.

264690331 is a deficient number, since it is larger than the sum of its proper divisors (1).

264690331 is an equidigital number, since it uses as much as digits as its factorization.

264690331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 34.

The square root of 264690331 is about 16269.3064080802. The cubic root of 264690331 is about 642.0655359902.

The spelling of 264690331 in words is "two hundred sixty-four million, six hundred ninety thousand, three hundred thirty-one".