31267241 has 2 divisors, whose sum is σ = 31267242. Its totient is φ = 31267240.

The previous prime is 31267237. The next prime is 31267261. The reversal of 31267241 is 14276213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23001616 + 8265625 = 4796^2 + 2875^2 .

It is a cyclic number.

It is not a de Polignac number, because 31267241 - 2² = 31267237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31267241.

It is not a weakly prime, because it can be changed into another prime (31267231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15633620 + 15633621.

It is an arithmetic number, because the mean of its divisors is an integer number (15633621).

Almost surely, 2^31267241 is an apocalyptic number.

It is an amenable number.

31267241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31267241 is an equidigital number, since it uses as much as digits as its factorization.

31267241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 31267241 is about 5591.7118130319. The cubic root of 31267241 is about 315.0381779543.

The spelling of 31267241 in words is "thirty-one million, two hundred sixty-seven thousand, two hundred forty-one".