63431532 has 48 divisors (see below), whose sum is σ = 164913280. Its totient is φ = 21084624.

The previous prime is 63431531. The next prime is 63431561. The reversal of 63431532 is 23513436.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 63431496 and 63431505.

It is not an unprimeable number, because it can be changed into a prime (63431531) 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, 55923 + ... + 57045.

Almost surely, 2^63431532 is an apocalyptic number.

It is an amenable number.

63431532 is an abundant number, since it is smaller than the sum of its proper divisors (101481748).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63431532 is a wasteful number, since it uses less digits than its factorization.

63431532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659 (or 1651 counting only the distinct ones).

The product of its digits is 6480, while the sum is 27.

The square root of 63431532 is about 7964.3915021802. The cubic root of 63431532 is about 398.8121677949.

Adding to 63431532 its reverse (23513436), we get a palindrome (86944968).

It can be divided in two parts, 6343 and 1532, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 63431532 in words is "sixty-three million, four hundred thirty-one thousand, five hundred thirty-two".