40031423040 has 224 divisors, whose sum is σ = 146130776064. Its totient is φ = 9094993920.

The previous prime is 40031423039. The next prime is 40031423059. The reversal of 40031423040 is 4032413004.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 40031422998 and 40031423016.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1104405 + ... + 1140075.

It is an arithmetic number, because the mean of its divisors is an integer number (652369536).

Almost surely, 2^40031423040 is an apocalyptic number.

40031423040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40031423040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73065388032).

40031423040 is an abundant number, since it is smaller than the sum of its proper divisors (106099353024).

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

40031423040 is a wasteful number, since it uses less digits than its factorization.

40031423040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35865 (or 35855 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 40031423040 its reverse (4032413004), we get a palindrome (44063836044).

The spelling of 40031423040 in words is "forty billion, thirty-one million, four hundred twenty-three thousand, forty".