220040001931 has 2 divisors, whose sum is σ = 220040001932. Its totient is φ = 220040001930.

The previous prime is 220040001919. The next prime is 220040002043. The reversal of 220040001931 is 139100040022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220040001931 - 2⁵ = 220040001899 is a prime.

It is a super-2 number, since 2×220040001931² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (220040031931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110020000965 + 110020000966.

It is an arithmetic number, because the mean of its divisors is an integer number (110020000966).

Almost surely, 2^220040001931 is an apocalyptic number.

220040001931 is a deficient number, since it is larger than the sum of its proper divisors (1).

220040001931 is an equidigital number, since it uses as much as digits as its factorization.

220040001931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 220040001931 its reverse (139100040022), we get a palindrome (359140041953).

The spelling of 220040001931 in words is "two hundred twenty billion, forty million, one thousand, nine hundred thirty-one".