40131232032 has 48 divisors (see below), whose sum is σ = 108742701312. Its totient is φ = 12945557760.

The previous prime is 40131232027. The next prime is 40131232039. The reversal of 40131232032 is 23023213104.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×40131232032² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40131232039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6739503 + ... + 6745454.

It is an arithmetic number, because the mean of its divisors is an integer number (2265472944).

Almost surely, 2^40131232032 is an apocalyptic number.

It is an amenable number.

40131232032 is an abundant number, since it is smaller than the sum of its proper divisors (68611469280).

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

40131232032 is a wasteful number, since it uses less digits than its factorization.

40131232032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13485001 (or 13484993 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 40131232032 its reverse (23023213104), we get a palindrome (63154445136).

The spelling of 40131232032 in words is "forty billion, one hundred thirty-one million, two hundred thirty-two thousand, thirty-two".