31430241 has 16 divisors (see below), whose sum is σ = 46675200. Its totient is φ = 20903184.

The previous prime is 31430227. The next prime is 31430251. The reversal of 31430241 is 14203413.

It is not a de Polignac number, because 31430241 - 2⁶ = 31430177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31430221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12600 + ... + 14886.

It is an arithmetic number, because the mean of its divisors is an integer number (2917200).

Almost surely, 2^31430241 is an apocalyptic number.

It is an amenable number.

31430241 is a deficient number, since it is larger than the sum of its proper divisors (15244959).

31430241 is a wasteful number, since it uses less digits than its factorization.

31430241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805 (or 2799 counting only the distinct ones).

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

The square root of 31430241 is about 5606.2680100045. The cubic root of 31430241 is about 315.5846737486.

Adding to 31430241 its reverse (14203413), we get a palindrome (45633654).

The spelling of 31430241 in words is "thirty-one million, four hundred thirty thousand, two hundred forty-one".