321345543123 has 48 divisors (see below), whose sum is σ = 520182853632. Its totient is φ = 189442152000.

The previous prime is 321345543089. The next prime is 321345543133.

321345543123 is a `hidden beast` number, since 3 + 21 + 34 + 554 + 31 + 23 = 666.

321345543123 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 321345543123 - 2¹⁴ = 321345526739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321345543133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18053358 + ... + 18071148.

It is an arithmetic number, because the mean of its divisors is an integer number (10837142784).

Almost surely, 2^321345543123 is an apocalyptic number.

321345543123 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

321345543123 is a deficient number, since it is larger than the sum of its proper divisors (198837310509).

321345543123 is a wasteful number, since it uses less digits than its factorization.

321345543123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22776 (or 22773 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

It can be divided in two parts, 321345 and 543123, that added together give a palindrome (864468).

The spelling of 321345543123 in words is "three hundred twenty-one billion, three hundred forty-five million, five hundred forty-three thousand, one hundred twenty-three".