320033253 has 4 divisors (see below), whose sum is σ = 426711008. Its totient is φ = 213355500.

The previous prime is 320033237. The next prime is 320033261. The reversal of 320033253 is 352330023.

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: 352330023 = 3 ⋅117443341.

It is not a de Polignac number, because 320033253 - 2⁴ = 320033237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320031253) 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, 53338873 + ... + 53338878.

It is an arithmetic number, because the mean of its divisors is an integer number (106677752).

Almost surely, 2^320033253 is an apocalyptic number.

It is an amenable number.

320033253 is a deficient number, since it is larger than the sum of its proper divisors (106677755).

320033253 is a wasteful number, since it uses less digits than its factorization.

320033253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106677754.

The product of its (nonzero) digits is 1620, while the sum is 21.

The square root of 320033253 is about 17889.4732454592. The cubic root of 320033253 is about 684.0140702793.

Adding to 320033253 its reverse (352330023), we get a palindrome (672363276).

The spelling of 320033253 in words is "three hundred twenty million, thirty-three thousand, two hundred fifty-three".