321142403 has 8 divisors (see below), whose sum is σ = 327894000. Its totient is φ = 314454528.

The previous prime is 321142387. The next prime is 321142411. The reversal of 321142403 is 304241123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 321142403 - 2⁴ = 321142387 is a prime.

It is a super-2 number, since 2×321142403² = 206264886009228818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321142453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5678 + ... + 25971.

It is an arithmetic number, because the mean of its divisors is an integer number (40986750).

Almost surely, 2^321142403 is an apocalyptic number.

321142403 is a deficient number, since it is larger than the sum of its proper divisors (6751597).

321142403 is a wasteful number, since it uses less digits than its factorization.

321142403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31861.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 321142403 is about 17920.4465067141. The cubic root of 321142403 is about 684.8033626714.

Adding to 321142403 its reverse (304241123), we get a palindrome (625383526).

The spelling of 321142403 in words is "three hundred twenty-one million, one hundred forty-two thousand, four hundred three".