320798253 has 4 divisors (see below), whose sum is σ = 427731008. Its totient is φ = 213865500.

The previous prime is 320798197. The next prime is 320798267. The reversal of 320798253 is 352897023.

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.

It is not a de Polignac number, because 320798253 - 2¹³ = 320790061 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 (320798293) 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, 53466373 + ... + 53466378.

It is an arithmetic number, because the mean of its divisors is an integer number (106932752).

Almost surely, 2^320798253 is an apocalyptic number.

It is an amenable number.

320798253 is a deficient number, since it is larger than the sum of its proper divisors (106932755).

320798253 is a wasteful number, since it uses less digits than its factorization.

320798253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106932754.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 320798253 is about 17910.8417725131. The cubic root of 320798253 is about 684.5586536662.

The spelling of 320798253 in words is "three hundred twenty million, seven hundred ninety-eight thousand, two hundred fifty-three".