4491031 has 2 divisors, whose sum is σ = 4491032. Its totient is φ = 4491030.

The previous prime is 4491013. The next prime is 4491037. The reversal of 4491031 is 1301944.

Together with previous prime (4491013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4491031 - 2⁵ = 4490999 is a prime.

It is a super-2 number, since 2×4491031² = 40338718885922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4490993 and 4491011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4491037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2245515 + 2245516.

It is an arithmetic number, because the mean of its divisors is an integer number (2245516).

Almost surely, 2^4491031 is an apocalyptic number.

4491031 is a deficient number, since it is larger than the sum of its proper divisors (1).

4491031 is an equidigital number, since it uses as much as digits as its factorization.

4491031 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 22.

The square root of 4491031 is about 2119.2052755691. The cubic root of 4491031 is about 164.9866043609.

Adding to 4491031 its reverse (1301944), we get a palindrome (5792975).

The spelling of 4491031 in words is "four million, four hundred ninety-one thousand, thirty-one".