1205323351223 has 32 divisors (see below), whose sum is σ = 1287100170240. Its totient is φ = 1125514414080.

The previous prime is 1205323351201. The next prime is 1205323351247. The reversal of 1205323351223 is 3221533235021.

It is a cyclic number.

It is not a de Polignac number, because 1205323351223 - 2¹² = 1205323347127 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 1205323351223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1205323351283) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 506224493 + ... + 506226873.

It is an arithmetic number, because the mean of its divisors is an integer number (40221880320).

Almost surely, 2^{1205323351223} is an apocalyptic number.

1205323351223 is a deficient number, since it is larger than the sum of its proper divisors (81776819017).

1205323351223 is a wasteful number, since it uses less digits than its factorization.

1205323351223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3807.

The product of its (nonzero) digits is 32400, while the sum is 32.

Adding to 1205323351223 its reverse (3221533235021), we get a palindrome (4426856586244).

The spelling of 1205323351223 in words is "one trillion, two hundred five billion, three hundred twenty-three million, three hundred fifty-one thousand, two hundred twenty-three".