40531032 has 24 divisors (see below), whose sum is σ = 109771740. Its totient is φ = 13510320.

The previous prime is 40531027. The next prime is 40531033. The reversal of 40531032 is 23013504.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40530996 and 40531014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40531033) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 281394 + ... + 281537.

Almost surely, 2^40531032 is an apocalyptic number.

It is an amenable number.

40531032 is an abundant number, since it is smaller than the sum of its proper divisors (69240708).

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

40531032 is a wasteful number, since it uses less digits than its factorization.

40531032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562943 (or 562936 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 40531032 is about 6366.3986680069. The cubic root of 40531032 is about 343.5019609227.

Adding to 40531032 its reverse (23013504), we get a palindrome (63544536).

The spelling of 40531032 in words is "forty million, five hundred thirty-one thousand, thirty-two".