40232131040 has 24 divisors (see below), whose sum is σ = 95048409960. Its totient is φ = 16092852352.

The previous prime is 40232131033. The next prime is 40232131057. The reversal of 40232131040 is 4013123204.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 125725250 + ... + 125725569.

It is an arithmetic number, because the mean of its divisors is an integer number (3960350415).

Almost surely, 2^40232131040 is an apocalyptic number.

40232131040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40232131040 is an abundant number, since it is smaller than the sum of its proper divisors (54816278920).

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

40232131040 is a wasteful number, since it uses less digits than its factorization.

40232131040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251450834 (or 251450826 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 40232131040 its reverse (4013123204), we get a palindrome (44245254244).

The spelling of 40232131040 in words is "forty billion, two hundred thirty-two million, one hundred thirty-one thousand, forty".