2208431 has 2 divisors, whose sum is σ = 2208432. Its totient is φ = 2208430.

The previous prime is 2208421. The next prime is 2208439. The reversal of 2208431 is 1348022.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2208431 is a prime.

It is a super-2 number, since 2×2208431² = 9754334963522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2208439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1104215 + 1104216.

It is an arithmetic number, because the mean of its divisors is an integer number (1104216).

2^2208431 is an apocalyptic number.

2208431 is a deficient number, since it is larger than the sum of its proper divisors (1).

2208431 is an equidigital number, since it uses as much as digits as its factorization.

2208431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2208431 is about 1486.0790692288. The cubic root of 2208431 is about 130.2250736080.

The spelling of 2208431 in words is "two million, two hundred eight thousand, four hundred thirty-one".