40312532 has 12 divisors (see below), whose sum is σ = 75973716. Its totient is φ = 18605760.

The previous prime is 40312529. The next prime is 40312549. The reversal of 40312532 is 23521304.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 26666896 + 13645636 = 5164^2 + 3694^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387569 + ... + 387672.

It is an arithmetic number, because the mean of its divisors is an integer number (6331143).

Almost surely, 2^40312532 is an apocalyptic number.

It is an amenable number.

40312532 is a deficient number, since it is larger than the sum of its proper divisors (35661184).

40312532 is a wasteful number, since it uses less digits than its factorization.

40312532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775258 (or 775256 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 40312532 is about 6349.2150695972. The cubic root of 40312532 is about 342.8835832453.

Adding to 40312532 its reverse (23521304), we get a palindrome (63833836).

The spelling of 40312532 in words is "forty million, three hundred twelve thousand, five hundred thirty-two".