31456241 has 2 divisors, whose sum is σ = 31456242. Its totient is φ = 31456240.

The previous prime is 31456237. The next prime is 31456247. The reversal of 31456241 is 14265413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21715600 + 9740641 = 4660^2 + 3121^2 .

It is a cyclic number.

It is not a de Polignac number, because 31456241 - 2² = 31456237 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31456241.

It is not a weakly prime, because it can be changed into another prime (31456247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15728120 + 15728121.

It is an arithmetic number, because the mean of its divisors is an integer number (15728121).

Almost surely, 2^31456241 is an apocalyptic number.

It is an amenable number.

31456241 is a deficient number, since it is larger than the sum of its proper divisors (1).

31456241 is an equidigital number, since it uses as much as digits as its factorization.

31456241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 26.

The square root of 31456241 is about 5608.5863637819. The cubic root of 31456241 is about 315.6716700063.

The spelling of 31456241 in words is "thirty-one million, four hundred fifty-six thousand, two hundred forty-one".