220131073 has 2 divisors, whose sum is σ = 220131074. Its totient is φ = 220131072.
The previous prime is 220131071. The next prime is 220131077. The reversal of 220131073 is 370131022.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 202549824 + 17581249 = 14232^2 + 4193^2 .
It is a cyclic number.
It is not a de Polignac number, because 220131073 - 21 = 220131071 is a prime.
Together with 220131071, it forms a pair of twin primes.
It is a self number, because there is not a number n which added to its sum of digits gives 220131073.
It is not a weakly prime, because it can be changed into another prime (220131071) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110065536 + 110065537.
It is an arithmetic number, because the mean of its divisors is an integer number (110065537).
Almost surely, 2220131073 is an apocalyptic number.
It is an amenable number.
220131073 is a deficient number, since it is larger than the sum of its proper divisors (1).
220131073 is an equidigital number, since it uses as much as digits as its factorization.
220131073 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 252, while the sum is 19.
The square root of 220131073 is about 14836.8147861999. The cubic root of 220131073 is about 603.8009381956.
Adding to 220131073 its reverse (370131022), we get a palindrome (590262095).
The spelling of 220131073 in words is "two hundred twenty million, one hundred thirty-one thousand, seventy-three".
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