220311222130031 has 4 divisors (see below), whose sum is σ = 227908160824200. Its totient is φ = 212714283435864.

The previous prime is 220311222130009. The next prime is 220311222130067. The reversal of 220311222130031 is 130031222113022.

220311222130031 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 220311222130031 - 2²² = 220311217935727 is a prime.

It is a super-2 number, since 2×220311222130031² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220311222129979 and 220311222130006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220311222130331) 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, 3798469347041 + ... + 3798469347098.

It is an arithmetic number, because the mean of its divisors is an integer number (56977040206050).

Almost surely, 2^{220311222130031} is an apocalyptic number.

220311222130031 is a deficient number, since it is larger than the sum of its proper divisors (7596938694169).

220311222130031 is an equidigital number, since it uses as much as digits as its factorization.

220311222130031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7596938694168.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 220311222130031 its reverse (130031222113022), we get a palindrome (350342444243053).

The spelling of 220311222130031 in words is "two hundred twenty trillion, three hundred eleven billion, two hundred twenty-two million, one hundred thirty thousand, thirty-one".