63431361 has 12 divisors (see below), whose sum is σ = 104712192. Its totient is φ = 36246456.

The previous prime is 63431359. The next prime is 63431371. The reversal of 63431361 is 16313436.

It is not a de Polignac number, because 63431361 - 2¹ = 63431359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (63431371) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 503361 + ... + 503486.

It is an arithmetic number, because the mean of its divisors is an integer number (8726016).

Almost surely, 2^63431361 is an apocalyptic number.

It is an amenable number.

63431361 is a deficient number, since it is larger than the sum of its proper divisors (41280831).

63431361 is a wasteful number, since it uses less digits than its factorization.

63431361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1006860 (or 1006857 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 63431361 is about 7964.3807668895. The cubic root of 63431361 is about 398.8118094193.

Adding to 63431361 its reverse (16313436), we get a palindrome (79744797).

The spelling of 63431361 in words is "sixty-three million, four hundred thirty-one thousand, three hundred sixty-one".