320231111133 has 16 divisors (see below), whose sum is σ = 463945472000. Its totient is φ = 195726993840.

The previous prime is 320231111129. The next prime is 320231111143. The reversal of 320231111133 is 331111132023.

It is a happy number.

It is not a de Polignac number, because 320231111133 - 2² = 320231111129 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 (320231111143) 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, 90612583 + ... + 90616116.

It is an arithmetic number, because the mean of its divisors is an integer number (28996592000).

Almost surely, 2^320231111133 is an apocalyptic number.

It is an amenable number.

320231111133 is a deficient number, since it is larger than the sum of its proper divisors (143714360867).

320231111133 is a wasteful number, since it uses less digits than its factorization.

320231111133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181228752.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 320231111133 its reverse (331111132023), we get a palindrome (651342243156).

The spelling of 320231111133 in words is "three hundred twenty billion, two hundred thirty-one million, one hundred eleven thousand, one hundred thirty-three".