40312004432 has 60 divisors (see below), whose sum is σ = 90943616736. Its totient is φ = 17259963840.

The previous prime is 40312004431. The next prime is 40312004437. The reversal of 40312004432 is 23440021304.

It is a junction number, because it is equal to n+sod(n) for n = 40312004398 and 40312004407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40312004431) 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, 809207 + ... + 857577.

Almost surely, 2^40312004432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40312004432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45471808368).

40312004432 is an abundant number, since it is smaller than the sum of its proper divisors (50631612304).

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

40312004432 is a wasteful number, since it uses less digits than its factorization.

40312004432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49456 (or 49443 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 40312004432 its reverse (23440021304), we get a palindrome (63752025736).

The spelling of 40312004432 in words is "forty billion, three hundred twelve million, four thousand, four hundred thirty-two".