1223404313 has 8 divisors (see below), whose sum is σ = 1264491648. Its totient is φ = 1182944464.

The previous prime is 1223404307. The next prime is 1223404379. The reversal of 1223404313 is 3134043221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223404313 is a prime.

It is a super-2 number, since 2×1223404313² = 2993436226134003938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223404513) 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, 152906 + ... + 160707.

It is an arithmetic number, because the mean of its divisors is an integer number (158061456).

Almost surely, 2^1223404313 is an apocalyptic number.

It is an amenable number.

1223404313 is a deficient number, since it is larger than the sum of its proper divisors (41087335).

1223404313 is an equidigital number, since it uses as much as digits as its factorization.

1223404313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313743.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1223404313 is about 34977.1970432166. The cubic root of 1223404313 is about 1069.5226895477.

Adding to 1223404313 its reverse (3134043221), we get a palindrome (4357447534).

The spelling of 1223404313 in words is "one billion, two hundred twenty-three million, four hundred four thousand, three hundred thirteen".