63131249 has 2 divisors, whose sum is σ = 63131250. Its totient is φ = 63131248.

The previous prime is 63131147. The next prime is 63131303. The reversal of 63131249 is 94213136.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63091249 + 40000 = 7943^2 + 200^2 .

It is a cyclic number.

It is not a de Polignac number, because 63131249 - 2²⁰ = 62082673 is a prime.

It is not a weakly prime, because it can be changed into another prime (63131749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31565624 + 31565625.

It is an arithmetic number, because the mean of its divisors is an integer number (31565625).

Almost surely, 2^63131249 is an apocalyptic number.

It is an amenable number.

63131249 is a deficient number, since it is larger than the sum of its proper divisors (1).

63131249 is an equidigital number, since it uses as much as digits as its factorization.

63131249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 29.

The square root of 63131249 is about 7945.5175413563. The cubic root of 63131249 is about 398.1818504350.

The spelling of 63131249 in words is "sixty-three million, one hundred thirty-one thousand, two hundred forty-nine".