4431131 has 2 divisors, whose sum is σ = 4431132. Its totient is φ = 4431130.

The previous prime is 4431127. The next prime is 4431143. The reversal of 4431131 is 1311344.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4431131 - 2² = 4431127 is a prime.

It is a super-2 number, since 2×4431131² = 39269843878322, which contains 22 as substring.

It is equal to p₃₁₁₄₀₈ and since 4431131 and 311408 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (4431151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2215565 + 2215566.

It is an arithmetic number, because the mean of its divisors is an integer number (2215566).

Almost surely, 2^4431131 is an apocalyptic number.

4431131 is a deficient number, since it is larger than the sum of its proper divisors (1).

4431131 is an equidigital number, since it uses as much as digits as its factorization.

4431131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 17.

The square root of 4431131 is about 2105.0251779967. The cubic root of 4431131 is about 164.2498052042.

Adding to 4431131 its reverse (1311344), we get a palindrome (5742475).

The spelling of 4431131 in words is "four million, four hundred thirty-one thousand, one hundred thirty-one".