31742241 has 8 divisors (see below), whose sum is σ = 43355424. Its totient is φ = 20645280.

The previous prime is 31742239. The next prime is 31742251. The reversal of 31742241 is 14224713.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31742241 - 2¹ = 31742239 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31742201) 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 7 ways as a sum of consecutive naturals, for example, 128911 + ... + 129156.

It is an arithmetic number, because the mean of its divisors is an integer number (5419428).

Almost surely, 2^31742241 is an apocalyptic number.

It is an amenable number.

31742241 is a deficient number, since it is larger than the sum of its proper divisors (11613183).

31742241 is a wasteful number, since it uses less digits than its factorization.

31742241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258111.

The product of its digits is 1344, while the sum is 24.

The square root of 31742241 is about 5634.0252928080. The cubic root of 31742241 is about 316.6254802698.

Adding to 31742241 its reverse (14224713), we get a palindrome (45966954).

The spelling of 31742241 in words is "thirty-one million, seven hundred forty-two thousand, two hundred forty-one".