264215423 has 2 divisors, whose sum is σ = 264215424. Its totient is φ = 264215422.

The previous prime is 264215407. The next prime is 264215431. The reversal of 264215423 is 324512462.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 264215423 - 2⁴ = 264215407 is a prime.

It is a super-3 number, since 3×264215423³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (264215443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132107711 + 132107712.

It is an arithmetic number, because the mean of its divisors is an integer number (132107712).

Almost surely, 2^264215423 is an apocalyptic number.

264215423 is a deficient number, since it is larger than the sum of its proper divisors (1).

264215423 is an equidigital number, since it uses as much as digits as its factorization.

264215423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 29.

The square root of 264215423 is about 16254.7046420413. The cubic root of 264215423 is about 641.6813076174.

Adding to 264215423 its reverse (324512462), we get a palindrome (588727885).

The spelling of 264215423 in words is "two hundred sixty-four million, two hundred fifteen thousand, four hundred twenty-three".