220231332311 has 2 divisors, whose sum is σ = 220231332312. Its totient is φ = 220231332310.

The previous prime is 220231332289. The next prime is 220231332329. The reversal of 220231332311 is 113233132022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220231332311 is a prime.

It is a super-2 number, since 2×220231332311² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220231337311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110115666155 + 110115666156.

It is an arithmetic number, because the mean of its divisors is an integer number (110115666156).

Almost surely, 2^220231332311 is an apocalyptic number.

220231332311 is a deficient number, since it is larger than the sum of its proper divisors (1).

220231332311 is an equidigital number, since it uses as much as digits as its factorization.

220231332311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 220231332311 its reverse (113233132022), we get a palindrome (333464464333).

The spelling of 220231332311 in words is "two hundred twenty billion, two hundred thirty-one million, three hundred thirty-two thousand, three hundred eleven".