321442023 has 8 divisors (see below), whose sum is σ = 489816448. Its totient is φ = 183681144.

The previous prime is 321441949. The next prime is 321442027. The reversal of 321442023 is 320244123.

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

It is not a de Polignac number, because 321442023 - 2¹³ = 321433831 is a prime.

It is a super-3 number, since 3×321442023³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 15306763 = 321442023 / (3 + 2 + 1 + 4 + 4 + 2 + 0 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321442027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7653361 + ... + 7653402.

It is an arithmetic number, because the mean of its divisors is an integer number (61227056).

Almost surely, 2^321442023 is an apocalyptic number.

321442023 is a deficient number, since it is larger than the sum of its proper divisors (168374425).

321442023 is a wasteful number, since it uses less digits than its factorization.

321442023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15306773.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 321442023 is about 17928.8042824947. The cubic root of 321442023 is about 685.0162661525.

Adding to 321442023 its reverse (320244123), we get a palindrome (641686146).

The spelling of 321442023 in words is "three hundred twenty-one million, four hundred forty-two thousand, twenty-three".