1323511145 has 16 divisors (see below), whose sum is σ = 1733693760. Its totient is φ = 961944000.

The previous prime is 1323511093. The next prime is 1323511159. The reversal of 1323511145 is 5411153231.

It is not a de Polignac number, because 1323511145 - 2¹⁸ = 1323249001 is a prime.

It is a super-2 number, since 2×1323511145² = 3503363501878422050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91670 + ... + 105120.

It is an arithmetic number, because the mean of its divisors is an integer number (108355860).

Almost surely, 2^1323511145 is an apocalyptic number.

It is an amenable number.

1323511145 is a deficient number, since it is larger than the sum of its proper divisors (410182615).

1323511145 is a wasteful number, since it uses less digits than its factorization.

1323511145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15256.

The product of its digits is 1800, while the sum is 26.

The square root of 1323511145 is about 36380.0927019160. The cubic root of 1323511145 is about 1097.9330731721.

Adding to 1323511145 its reverse (5411153231), we get a palindrome (6734664376).

The spelling of 1323511145 in words is "one billion, three hundred twenty-three million, five hundred eleven thousand, one hundred forty-five".