1264313217 has 4 divisors (see below), whose sum is σ = 1685750960. Its totient is φ = 842875476.

The previous prime is 1264313201. The next prime is 1264313227. The reversal of 1264313217 is 7123134621.

It is a happy number.

1264313217 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1264313217 - 2⁴ = 1264313201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1264313227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 210718867 + ... + 210718872.

It is an arithmetic number, because the mean of its divisors is an integer number (421437740).

Almost surely, 2^1264313217 is an apocalyptic number.

It is an amenable number.

1264313217 is a deficient number, since it is larger than the sum of its proper divisors (421437743).

1264313217 is an equidigital number, since it uses as much as digits as its factorization.

1264313217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421437742.

The product of its digits is 6048, while the sum is 30.

The square root of 1264313217 is about 35557.1823546242. The cubic root of 1264313217 is about 1081.3133362522.

Adding to 1264313217 its reverse (7123134621), we get a palindrome (8387447838).

The spelling of 1264313217 in words is "one billion, two hundred sixty-four million, three hundred thirteen thousand, two hundred seventeen".