40401313232 has 80 divisors (see below), whose sum is σ = 91710951552. Its totient is φ = 16880693760.

The previous prime is 40401313219. The next prime is 40401313261. The reversal of 40401313232 is 23231310404.

It is a super-2 number, since 2×40401313232² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40401313198 and 40401313207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2674982 + ... + 2690042.

Almost surely, 2^40401313232 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 40401313232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45855475776).

40401313232 is an abundant number, since it is smaller than the sum of its proper divisors (51309638320).

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

40401313232 is a wasteful number, since it uses less digits than its factorization.

40401313232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15676 (or 15670 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 40401313232 its reverse (23231310404), we get a palindrome (63632623636).

The spelling of 40401313232 in words is "forty billion, four hundred one million, three hundred thirteen thousand, two hundred thirty-two".