1213223313 has 8 divisors (see below), whose sum is σ = 1645048800. Its totient is φ = 795106688.

The previous prime is 1213223293. The next prime is 1213223399. The reversal of 1213223313 is 3133223121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1213223313 - 2²² = 1209029009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1213223313.

It is not an unprimeable number, because it can be changed into a prime (1213223813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3427008 + ... + 3427361.

It is an arithmetic number, because the mean of its divisors is an integer number (205631100).

Almost surely, 2^1213223313 is an apocalyptic number.

It is an amenable number.

1213223313 is a deficient number, since it is larger than the sum of its proper divisors (431825487).

1213223313 is an equidigital number, since it uses as much as digits as its factorization.

1213223313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6854431.

The product of its digits is 648, while the sum is 21.

The square root of 1213223313 is about 34831.3553138548. The cubic root of 1213223313 is about 1066.5476153047.

Adding to 1213223313 its reverse (3133223121), we get a palindrome (4346446434).

The spelling of 1213223313 in words is "one billion, two hundred thirteen million, two hundred twenty-three thousand, three hundred thirteen".