63131289 has 16 divisors (see below), whose sum is σ = 93777600. Its totient is φ = 37509696.

The previous prime is 63131249. The next prime is 63131303. The reversal of 63131289 is 98213136.

It is not a de Polignac number, because 63131289 - 2⁹ = 63130777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63131249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26779 + ... + 29040.

It is an arithmetic number, because the mean of its divisors is an integer number (5861100).

Almost surely, 2^63131289 is an apocalyptic number.

It is an amenable number.

63131289 is a deficient number, since it is larger than the sum of its proper divisors (30646311).

63131289 is a wasteful number, since it uses less digits than its factorization.

63131289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55864.

The product of its digits is 7776, while the sum is 33.

The square root of 63131289 is about 7945.5200584984. The cubic root of 63131289 is about 398.1819345311.

The spelling of 63131289 in words is "sixty-three million, one hundred thirty-one thousand, two hundred eighty-nine".