63131217 has 8 divisors (see below), whose sum is σ = 89126496. Its totient is φ = 39611712.

The previous prime is 63131147. The next prime is 63131249. The reversal of 63131217 is 71213136.

63131217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 63131217 - 2⁸ = 63130961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63131017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 618883 + ... + 618984.

It is an arithmetic number, because the mean of its divisors is an integer number (11140812).

Almost surely, 2^63131217 is an apocalyptic number.

It is an amenable number.

63131217 is a deficient number, since it is larger than the sum of its proper divisors (25995279).

63131217 is a wasteful number, since it uses less digits than its factorization.

63131217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237887.

The product of its digits is 756, while the sum is 24.

The square root of 63131217 is about 7945.5155276420. The cubic root of 63131217 is about 398.1817831581.

The spelling of 63131217 in words is "sixty-three million, one hundred thirty-one thousand, two hundred seventeen".