2220312331 has 2 divisors, whose sum is σ = 2220312332. Its totient is φ = 2220312330.

The previous prime is 2220312313. The next prime is 2220312371. The reversal of 2220312331 is 1332130222.

Together with previous prime (2220312313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2220312331 - 2⁵ = 2220312299 is a prime.

It is a super-2 number, since 2×2220312331² = 9859573694381307122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2220312299 and 2220312308.

It is not a weakly prime, because it can be changed into another prime (2220312371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110156165 + 1110156166.

It is an arithmetic number, because the mean of its divisors is an integer number (1110156166).

Almost surely, 2^2220312331 is an apocalyptic number.

2220312331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220312331 is an equidigital number, since it uses as much as digits as its factorization.

2220312331 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 19.

The square root of 2220312331 is about 47120.1902691405. The cubic root of 2220312331 is about 1304.5819246697.

Adding to 2220312331 its reverse (1332130222), we get a palindrome (3552442553).

The spelling of 2220312331 in words is "two billion, two hundred twenty million, three hundred twelve thousand, three hundred thirty-one".