220131323331 has 4 divisors (see below), whose sum is σ = 293508431112. Its totient is φ = 146754215552.

The previous prime is 220131323303. The next prime is 220131323339. The reversal of 220131323331 is 133323131022.

220131323331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 220131323331 - 2²⁶ = 220064214467 is a prime.

It is a super-2 number, since 2×220131323331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220131323339) 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, 36688553886 + ... + 36688553891.

It is an arithmetic number, because the mean of its divisors is an integer number (73377107778).

Almost surely, 2^220131323331 is an apocalyptic number.

220131323331 is a deficient number, since it is larger than the sum of its proper divisors (73377107781).

220131323331 is an equidigital number, since it uses as much as digits as its factorization.

220131323331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73377107780.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 220131323331 its reverse (133323131022), we get a palindrome (353454454353).

The spelling of 220131323331 in words is "two hundred twenty billion, one hundred thirty-one million, three hundred twenty-three thousand, three hundred thirty-one".