1323311145 has 32 divisors (see below), whose sum is σ = 2400182400. Its totient is φ = 617186304.

The previous prime is 1323311137. The next prime is 1323311147. The reversal of 1323311145 is 5411133231.

It is not a de Polignac number, because 1323311145 - 2³ = 1323311137 is a prime.

It is a super-2 number, since 2×1323311145² = 3502304772962422050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1323311147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 174880 + ... + 182289.

It is an arithmetic number, because the mean of its divisors is an integer number (75005700).

Almost surely, 2^1323311145 is an apocalyptic number.

1323311145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1323311145 is a deficient number, since it is larger than the sum of its proper divisors (1076871255).

1323311145 is a wasteful number, since it uses less digits than its factorization.

1323311145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357209.

The product of its digits is 1080, while the sum is 24.

The square root of 1323311145 is about 36377.3438420124. The cubic root of 1323311145 is about 1097.8777663273.

Adding to 1323311145 its reverse (5411133231), we get a palindrome (6734444376).

The spelling of 1323311145 in words is "one billion, three hundred twenty-three million, three hundred eleven thousand, one hundred forty-five".