220231231471 has 2 divisors, whose sum is σ = 220231231472. Its totient is φ = 220231231470.

The previous prime is 220231231447. The next prime is 220231231481. The reversal of 220231231471 is 174132132022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220231231471 - 2⁵ = 220231231439 is a prime.

It is a super-3 number, since 3×220231231471³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220231231411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110115615735 + 110115615736.

It is an arithmetic number, because the mean of its divisors is an integer number (110115615736).

Almost surely, 2^220231231471 is an apocalyptic number.

220231231471 is a deficient number, since it is larger than the sum of its proper divisors (1).

220231231471 is an equidigital number, since it uses as much as digits as its factorization.

220231231471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

Adding to 220231231471 its reverse (174132132022), we get a palindrome (394363363493).

The spelling of 220231231471 in words is "two hundred twenty billion, two hundred thirty-one million, two hundred thirty-one thousand, four hundred seventy-one".