321042311 has 4 divisors (see below), whose sum is σ = 321137112. Its totient is φ = 320947512.

The previous prime is 321042307. The next prime is 321042317. The reversal of 321042311 is 113240123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113240123 = 269 ⋅420967.

It is a cyclic number.

It is not a de Polignac number, because 321042311 - 2² = 321042307 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 321042311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321042317) 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, 42125 + ... + 49158.

It is an arithmetic number, because the mean of its divisors is an integer number (80284278).

Almost surely, 2^321042311 is an apocalyptic number.

321042311 is a deficient number, since it is larger than the sum of its proper divisors (94801).

321042311 is an equidigital number, since it uses as much as digits as its factorization.

321042311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94800.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 321042311 is about 17917.6536131269. The cubic root of 321042311 is about 684.7322099576.

Adding to 321042311 its reverse (113240123), we get a palindrome (434282434).

The spelling of 321042311 in words is "three hundred twenty-one million, forty-two thousand, three hundred eleven".