31230241 has 16 divisors (see below), whose sum is σ = 38365056. Its totient is φ = 24811776.

The previous prime is 31230239. The next prime is 31230247. The reversal of 31230241 is 14203213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 31230241 - 2¹ = 31230239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31230247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6015 + ... + 9931.

It is an arithmetic number, because the mean of its divisors is an integer number (2397816).

Almost surely, 2^31230241 is an apocalyptic number.

It is an amenable number.

31230241 is a deficient number, since it is larger than the sum of its proper divisors (7134815).

31230241 is a wasteful number, since it uses less digits than its factorization.

31230241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31230241 is about 5588.4023656140. The cubic root of 31230241 is about 314.9138623970.

Adding to 31230241 its reverse (14203213), we get a palindrome (45433454).

The spelling of 31230241 in words is "thirty-one million, two hundred thirty thousand, two hundred forty-one".