323145311 has 4 divisors (see below), whose sum is σ = 327038712. Its totient is φ = 319251912.

The previous prime is 323145283. The next prime is 323145323. The reversal of 323145311 is 113541323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113541323 = 7 ⋅16220189.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-323145311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (323145391) 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, 1946576 + ... + 1946741.

It is an arithmetic number, because the mean of its divisors is an integer number (81759678).

Almost surely, 2^323145311 is an apocalyptic number.

323145311 is a deficient number, since it is larger than the sum of its proper divisors (3893401).

323145311 is an equidigital number, since it uses as much as digits as its factorization.

323145311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3893400.

The product of its digits is 1080, while the sum is 23.

The square root of 323145311 is about 17976.2429611974. The cubic root of 323145311 is about 686.2240787242.

Adding to 323145311 its reverse (113541323), we get a palindrome (436686634).

The spelling of 323145311 in words is "three hundred twenty-three million, one hundred forty-five thousand, three hundred eleven".