2231407 has 2 divisors, whose sum is σ = 2231408. Its totient is φ = 2231406.

The previous prime is 2231389. The next prime is 2231413. The reversal of 2231407 is 7041322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2231407 - 2⁷ = 2231279 is a prime.

It is a super-3 number, since 3×2231407³ = 33331712572611528429, which contains 333 as substring.

It is a Chen prime.

2231407 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2231447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115703 + 1115704.

It is an arithmetic number, because the mean of its divisors is an integer number (1115704).

2^2231407 is an apocalyptic number.

2231407 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231407 is an equidigital number, since it uses as much as digits as its factorization.

2231407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2231407 is about 1493.7894764658. The cubic root of 2231407 is about 130.6751268586.

Adding to 2231407 its reverse (7041322), we get a palindrome (9272729).

The spelling of 2231407 in words is "two million, two hundred thirty-one thousand, four hundred seven".