1222232313 has 4 divisors (see below), whose sum is σ = 1629643088. Its totient is φ = 814821540.

The previous prime is 1222232309. The next prime is 1222232339. The reversal of 1222232313 is 3132322221.

It is a happy number.

1222232313 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 1222232313 - 2² = 1222232309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222232313.

It is not an unprimeable number, because it can be changed into a prime (1222232383) 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, 203705383 + ... + 203705388.

It is an arithmetic number, because the mean of its divisors is an integer number (407410772).

Almost surely, 2^1222232313 is an apocalyptic number.

It is an amenable number.

1222232313 is a deficient number, since it is larger than the sum of its proper divisors (407410775).

1222232313 is an equidigital number, since it uses as much as digits as its factorization.

1222232313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407410774.

The product of its digits is 864, while the sum is 21.

The square root of 1222232313 is about 34960.4392563938. The cubic root of 1222232313 is about 1069.1810524011.

Adding to 1222232313 its reverse (3132322221), we get a palindrome (4354554534).

The spelling of 1222232313 in words is "one billion, two hundred twenty-two million, two hundred thirty-two thousand, three hundred thirteen".