31320441 has 6 divisors (see below), whose sum is σ = 45240650. Its totient is φ = 20880288.

The previous prime is 31320413. The next prime is 31320451. The reversal of 31320441 is 14402313.

It can be written as a sum of positive squares in only one way, i.e., 31136400 + 184041 = 5580^2 + 429^2 .

It is not a de Polignac number, because 31320441 - 2⁹ = 31319929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31320451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1740016 + ... + 1740033.

Almost surely, 2^31320441 is an apocalyptic number.

It is an amenable number.

31320441 is a deficient number, since it is larger than the sum of its proper divisors (13920209).

31320441 is a wasteful number, since it uses less digits than its factorization.

31320441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480055 (or 3480052 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 31320441 is about 5596.4668318503. The cubic root of 31320441 is about 315.2167518013.

Adding to 31320441 its reverse (14402313), we get a palindrome (45722754).

The spelling of 31320441 in words is "thirty-one million, three hundred twenty thousand, four hundred forty-one".