2220431 has 2 divisors, whose sum is σ = 2220432. Its totient is φ = 2220430.

The previous prime is 2220419. The next prime is 2220457. The reversal of 2220431 is 1340222.

2220431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2220431 - 2⁶ = 2220367 is a prime.

It is a super-2 number, since 2×2220431² = 9860627651522, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2220331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110215 + 1110216.

It is an arithmetic number, because the mean of its divisors is an integer number (1110216).

2^2220431 is an apocalyptic number.

2220431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220431 is an equidigital number, since it uses as much as digits as its factorization.

2220431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2220431 is about 1490.1110696857. Note that the first 3 decimals coincide. The cubic root of 2220431 is about 130.4605166246.

Adding to 2220431 its reverse (1340222), we get a palindrome (3560653).

The spelling of 2220431 in words is "two million, two hundred twenty thousand, four hundred thirty-one".