264442331 has 2 divisors, whose sum is σ = 264442332. Its totient is φ = 264442330.

The previous prime is 264442279. The next prime is 264442337. The reversal of 264442331 is 133244462.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264442331 is a prime.

It is a super-2 number, since 2×264442331² = 139859492849427122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 264442294 and 264442303.

It is not a weakly prime, because it can be changed into another prime (264442337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132221165 + 132221166.

It is an arithmetic number, because the mean of its divisors is an integer number (132221166).

Almost surely, 2^264442331 is an apocalyptic number.

264442331 is a deficient number, since it is larger than the sum of its proper divisors (1).

264442331 is an equidigital number, since it uses as much as digits as its factorization.

264442331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 29.

The square root of 264442331 is about 16261.6829079896. The cubic root of 264442331 is about 641.8649468605.

Adding to 264442331 its reverse (133244462), we get a palindrome (397686793).

The spelling of 264442331 in words is "two hundred sixty-four million, four hundred forty-two thousand, three hundred thirty-one".