220320311137 has 2 divisors, whose sum is σ = 220320311138. Its totient is φ = 220320311136.

The previous prime is 220320311129. The next prime is 220320311143. The reversal of 220320311137 is 731113023022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172190971681 + 48129339456 = 414959^2 + 219384^2 .

It is a cyclic number.

It is not a de Polignac number, because 220320311137 - 2³ = 220320311129 is a prime.

It is not a weakly prime, because it can be changed into another prime (220320318137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110160155568 + 110160155569.

It is an arithmetic number, because the mean of its divisors is an integer number (110160155569).

Almost surely, 2^220320311137 is an apocalyptic number.

It is an amenable number.

220320311137 is a deficient number, since it is larger than the sum of its proper divisors (1).

220320311137 is an equidigital number, since it uses as much as digits as its factorization.

220320311137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 220320311137 its reverse (731113023022), we get a palindrome (951433334159).

The spelling of 220320311137 in words is "two hundred twenty billion, three hundred twenty million, three hundred eleven thousand, one hundred thirty-seven".