63131445 has 48 divisors (see below), whose sum is σ = 118564992. Its totient is φ = 30890880.

The previous prime is 63131429. The next prime is 63131447. The reversal of 63131445 is 54413136.

It is not a de Polignac number, because 63131445 - 2⁴ = 63131429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63131447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 181762 + ... + 182108.

It is an arithmetic number, because the mean of its divisors is an integer number (2470104).

Almost surely, 2^63131445 is an apocalyptic number.

63131445 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

63131445 is a deficient number, since it is larger than the sum of its proper divisors (55433547).

63131445 is a wasteful number, since it uses less digits than its factorization.

63131445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682 (or 679 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 63131445 is about 7945.5298753450. The cubic root of 63131445 is about 398.1822625054.

The spelling of 63131445 in words is "sixty-three million, one hundred thirty-one thousand, four hundred forty-five".