220318140631 has 2 divisors, whose sum is σ = 220318140632. Its totient is φ = 220318140630.

The previous prime is 220318140587. The next prime is 220318140649. The reversal of 220318140631 is 136041813022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220318140631 - 2¹⁷ = 220318009559 is a prime.

It is a super-2 number, since 2×220318140631² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 220318140593 and 220318140602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220318140131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110159070315 + 110159070316.

It is an arithmetic number, because the mean of its divisors is an integer number (110159070316).

Almost surely, 2^220318140631 is an apocalyptic number.

220318140631 is a deficient number, since it is larger than the sum of its proper divisors (1).

220318140631 is an equidigital number, since it uses as much as digits as its factorization.

220318140631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

Adding to 220318140631 its reverse (136041813022), we get a palindrome (356359953653).

The spelling of 220318140631 in words is "two hundred twenty billion, three hundred eighteen million, one hundred forty thousand, six hundred thirty-one".