220311323031 has 8 divisors (see below), whose sum is σ = 293867031024. Its totient is φ = 146814915200.

The previous prime is 220311323009. The next prime is 220311323077. The reversal of 220311323031 is 130323113022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220311323031 - 2⁵ = 220311322999 is a prime.

It is a super-2 number, since 2×220311323031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220311322989 and 220311323007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220311323231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14816370 + ... + 14831231.

It is an arithmetic number, because the mean of its divisors is an integer number (36733378878).

Almost surely, 2^220311323031 is an apocalyptic number.

220311323031 is a deficient number, since it is larger than the sum of its proper divisors (73555707993).

220311323031 is a wasteful number, since it uses less digits than its factorization.

220311323031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29650081.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 220311323031 its reverse (130323113022), we get a palindrome (350634436053).

The spelling of 220311323031 in words is "two hundred twenty billion, three hundred eleven million, three hundred twenty-three thousand, thirty-one".