321113403 has 40 divisors (see below), whose sum is σ = 518485968. Its totient is φ = 196883136.

The previous prime is 321113381. The next prime is 321113411. The reversal of 321113403 is 304311123.

321113403 is a `hidden beast` number, since 321 + 1 + 1 + 340 + 3 = 666.

It is not a de Polignac number, because 321113403 - 2⁵ = 321113371 is a prime.

It is a super-3 number, since 3×321113403³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (321113413) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 491425 + ... + 492077.

Almost surely, 2^321113403 is an apocalyptic number.

321113403 is a deficient number, since it is larger than the sum of its proper divisors (197372565).

321113403 is a wasteful number, since it uses less digits than its factorization.

321113403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1136 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 321113403 is about 17919.6373568217. The cubic root of 321113403 is about 684.7827488719.

Adding to 321113403 its reverse (304311123), we get a palindrome (625424526).

The spelling of 321113403 in words is "three hundred twenty-one million, one hundred thirteen thousand, four hundred three".