31242441 has 16 divisors (see below), whose sum is σ = 45757440. Its totient is φ = 18873360.

The previous prime is 31242433. The next prime is 31242457. The reversal of 31242441 is 14424213.

It is not a de Polignac number, because 31242441 - 2³ = 31242433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31242461) 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, 10605 + ... + 13226.

It is an arithmetic number, because the mean of its divisors is an integer number (2859840).

Almost surely, 2^31242441 is an apocalyptic number.

It is an amenable number.

31242441 is a deficient number, since it is larger than the sum of its proper divisors (14514999).

31242441 is a wasteful number, since it uses less digits than its factorization.

31242441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23876.

The product of its digits is 768, while the sum is 21.

The square root of 31242441 is about 5589.4938053459. The cubic root of 31242441 is about 314.9548637772.

Adding to 31242441 its reverse (14424213), we get a palindrome (45666654).

It can be divided in two parts, 3124 and 2441, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 31242441 in words is "thirty-one million, two hundred forty-two thousand, four hundred forty-one".