321112003 has 4 divisors (see below), whose sum is σ = 328579768. Its totient is φ = 313644240.

The previous prime is 321111949. The next prime is 321112009. The reversal of 321112003 is 300211123.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 300211123 = 14321 ⋅20963.

It is a cyclic number.

It is not a de Polignac number, because 321112003 - 2⁹ = 321111491 is a prime.

It is a super-2 number, since 2×321112003² = 206225836941344018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321112009) 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, 3733818 + ... + 3733903.

It is an arithmetic number, because the mean of its divisors is an integer number (82144942).

Almost surely, 2^321112003 is an apocalyptic number.

321112003 is a deficient number, since it is larger than the sum of its proper divisors (7467765).

321112003 is an equidigital number, since it uses as much as digits as its factorization.

321112003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7467764.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 321112003 is about 17919.5982934886. The cubic root of 321112003 is about 684.7817536916.

Adding to 321112003 its reverse (300211123), we get a palindrome (621323126).

The spelling of 321112003 in words is "three hundred twenty-one million, one hundred twelve thousand, three".