321252123 has 4 divisors (see below), whose sum is σ = 428336168. Its totient is φ = 214168080.

The previous prime is 321252091. The next prime is 321252131.

321252123 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 321252123 - 2⁵ = 321252091 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 321252123.

It is not an unprimeable number, because it can be changed into a prime (321252143) 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, 53542018 + ... + 53542023.

It is an arithmetic number, because the mean of its divisors is an integer number (107084042).

Almost surely, 2^321252123 is an apocalyptic number.

321252123 is a deficient number, since it is larger than the sum of its proper divisors (107084045).

321252123 is a wasteful number, since it uses less digits than its factorization.

321252123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107084044.

The product of its digits is 720, while the sum is 21.

The square root of 321252123 is about 17923.5075529317. The cubic root of 321252123 is about 684.8813426879.

The spelling of 321252123 in words is "three hundred twenty-one million, two hundred fifty-two thousand, one hundred twenty-three".