320033013 has 4 divisors (see below), whose sum is σ = 426710688. Its totient is φ = 213355340.

The previous prime is 320032991. The next prime is 320033033. The reversal of 320033013 is 310330023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 310330023 = 3 ⋅103443341.

It is a cyclic number.

It is not a de Polignac number, because 320033013 - 2⁵ = 320032981 is a prime.

It is a super-2 number, since 2×320033013² = 204842258819716338, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 320032983 and 320033001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320033033) 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, 53338833 + ... + 53338838.

It is an arithmetic number, because the mean of its divisors is an integer number (106677672).

Almost surely, 2^320033013 is an apocalyptic number.

It is an amenable number.

320033013 is a deficient number, since it is larger than the sum of its proper divisors (106677675).

320033013 is a wasteful number, since it uses less digits than its factorization.

320033013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106677674.

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 320033013 is about 17889.4665376025. The cubic root of 320033013 is about 684.0138992935.

Adding to 320033013 its reverse (310330023), we get a palindrome (630363036).

The spelling of 320033013 in words is "three hundred twenty million, thirty-three thousand, thirteen".