31140441 has 6 divisors (see below), whose sum is σ = 44980650. Its totient is φ = 20760288.

The previous prime is 31140419. The next prime is 31140467. The reversal of 31140441 is 14404113.

It can be written as a sum of positive squares in only one way, i.e., 21123216 + 10017225 = 4596^2 + 3165^2 .

It is not a de Polignac number, because 31140441 - 2⁵ = 31140409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31140401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1730016 + ... + 1730033.

It is an arithmetic number, because the mean of its divisors is an integer number (7496775).

Almost surely, 2^31140441 is an apocalyptic number.

It is an amenable number.

31140441 is a deficient number, since it is larger than the sum of its proper divisors (13840209).

31140441 is a wasteful number, since it uses less digits than its factorization.

31140441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3460055 (or 3460052 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 31140441 is about 5580.3620850264. The cubic root of 31140441 is about 314.6117362929.

Adding to 31140441 its reverse (14404113), we get a palindrome (45544554).

The spelling of 31140441 in words is "thirty-one million, one hundred forty thousand, four hundred forty-one".