220131071 has 2 divisors, whose sum is σ = 220131072. Its totient is φ = 220131070.

The previous prime is 220131049. The next prime is 220131073. The reversal of 220131071 is 170131022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220131071 - 2¹⁰ = 220130047 is a prime.

Together with 220131073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220131073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110065535 + 110065536.

It is an arithmetic number, because the mean of its divisors is an integer number (110065536).

Almost surely, 2^220131071 is an apocalyptic number.

220131071 is a deficient number, since it is larger than the sum of its proper divisors (1).

220131071 is an equidigital number, since it uses as much as digits as its factorization.

220131071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 220131071 is about 14836.8147188000. The cubic root of 220131071 is about 603.8009363670.

Adding to 220131071 its reverse (170131022), we get a palindrome (390262093).

The spelling of 220131071 in words is "two hundred twenty million, one hundred thirty-one thousand, seventy-one".