1323155 has 4 divisors (see below), whose sum is σ = 1587792. Its totient is φ = 1058520.

The previous prime is 1323149. The next prime is 1323169. The reversal of 1323155 is 5513231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5513231 = 757 ⋅7283.

It is not a de Polignac number, because 1323155 - 2⁴ = 1323139 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132311 + ... + 132320.

It is an arithmetic number, because the mean of its divisors is an integer number (396948).

2^1323155 is an apocalyptic number.

1323155 is a deficient number, since it is larger than the sum of its proper divisors (264637).

1323155 is an equidigital number, since it uses as much as digits as its factorization.

1323155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264636.

The product of its digits is 450, while the sum is 20.

The square root of 1323155 is about 1150.2847473561. The cubic root of 1323155 is about 109.7834583017.

Adding to 1323155 its reverse (5513231), we get a palindrome (6836386).

The spelling of 1323155 in words is "one million, three hundred twenty-three thousand, one hundred fifty-five".