321264043 has 4 divisors (see below), whose sum is σ = 321989688. Its totient is φ = 320538400.

The previous prime is 321264029. The next prime is 321264049. The reversal of 321264043 is 340462123.

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

It is a cyclic number.

It is not a de Polignac number, because 321264043 - 2¹⁷ = 321132971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321263999 and 321264017.

It is not an unprimeable number, because it can be changed into a prime (321264049) 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, 362158 + ... + 363043.

It is an arithmetic number, because the mean of its divisors is an integer number (80497422).

Almost surely, 2^321264043 is an apocalyptic number.

321264043 is a deficient number, since it is larger than the sum of its proper divisors (725645).

321264043 is an equidigital number, since it uses as much as digits as its factorization.

321264043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725644.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 321264043 is about 17923.8400740466. The cubic root of 321264043 is about 684.8898133812.

The spelling of 321264043 in words is "three hundred twenty-one million, two hundred sixty-four thousand, forty-three".