321232013 has 16 divisors (see below), whose sum is σ = 336199680. Its totient is φ = 306591600.

The previous prime is 321232003. The next prime is 321232019. The reversal of 321232013 is 310232123.

It is a cyclic number.

It is not a de Polignac number, because 321232013 - 2⁴ = 321231997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321231982 and 321232000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321232019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1343948 + ... + 1344186.

It is an arithmetic number, because the mean of its divisors is an integer number (21012480).

Almost surely, 2^321232013 is an apocalyptic number.

It is an amenable number.

321232013 is a deficient number, since it is larger than the sum of its proper divisors (14967667).

321232013 is a wasteful number, since it uses less digits than its factorization.

321232013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 688.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 321232013 is about 17922.9465490471. The cubic root of 321232013 is about 684.8670514711.

Adding to 321232013 its reverse (310232123), we get a palindrome (631464136).

The spelling of 321232013 in words is "three hundred twenty-one million, two hundred thirty-two thousand, thirteen".