320231123131 has 4 divisors (see below), whose sum is σ = 321412788064. Its totient is φ = 319049458200.

The previous prime is 320231123129. The next prime is 320231123143. The reversal of 320231123131 is 131321132023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320231123131 - 2¹ = 320231123129 is a prime.

It is a super-2 number, since 2×320231123131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320231121131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590832060 + ... + 590832601.

It is an arithmetic number, because the mean of its divisors is an integer number (80353197016).

Almost surely, 2^320231123131 is an apocalyptic number.

320231123131 is a deficient number, since it is larger than the sum of its proper divisors (1181664933).

320231123131 is a wasteful number, since it uses less digits than its factorization.

320231123131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181664932.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 320231123131 its reverse (131321132023), we get a palindrome (451552255154).

The spelling of 320231123131 in words is "three hundred twenty billion, two hundred thirty-one million, one hundred twenty-three thousand, one hundred thirty-one".