31534241 has 2 divisors, whose sum is σ = 31534242. Its totient is φ = 31534240.

The previous prime is 31534231. The next prime is 31534247. The reversal of 31534241 is 14243513.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20511841 + 11022400 = 4529^2 + 3320^2 .

It is an emirp because it is prime and its reverse (14243513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31534241 - 2¹⁸ = 31272097 is a prime.

It is not a weakly prime, because it can be changed into another prime (31534247) 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 as a sum of consecutive naturals, namely, 15767120 + 15767121.

It is an arithmetic number, because the mean of its divisors is an integer number (15767121).

Almost surely, 2^31534241 is an apocalyptic number.

It is an amenable number.

31534241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31534241 is an equidigital number, since it uses as much as digits as its factorization.

31534241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 23.

The square root of 31534241 is about 5615.5356823726. The cubic root of 31534241 is about 315.9323714967.

Adding to 31534241 its reverse (14243513), we get a palindrome (45777754).

The spelling of 31534241 in words is "thirty-one million, five hundred thirty-four thousand, two hundred forty-one".