1223335345 has 4 divisors (see below), whose sum is σ = 1468002420. Its totient is φ = 978668272.

The previous prime is 1223335343. The next prime is 1223335357. The reversal of 1223335345 is 5435333221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5435333221 = 53 ⋅102553457.

It can be written as a sum of positive squares in 2 ways, for example, as 319551376 + 903783969 = 17876^2 + 30063^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223335345 - 2¹ = 1223335343 is a prime.

It is a super-4 number, since 4×1223335345⁴ (a number of 37 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1223335343) 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, 122333530 + ... + 122333539.

It is an arithmetic number, because the mean of its divisors is an integer number (367000605).

Almost surely, 2^1223335345 is an apocalyptic number.

It is an amenable number.

1223335345 is a deficient number, since it is larger than the sum of its proper divisors (244667075).

1223335345 is an equidigital number, since it uses as much as digits as its factorization.

1223335345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244667074.

The product of its digits is 32400, while the sum is 31.

The square root of 1223335345 is about 34976.2111298522. The cubic root of 1223335345 is about 1069.5025914695.

Adding to 1223335345 its reverse (5435333221), we get a palindrome (6658668566).

The spelling of 1223335345 in words is "one billion, two hundred twenty-three million, three hundred thirty-five thousand, three hundred forty-five".