40331243240 has 32 divisors (see below), whose sum is σ = 91643774760. Its totient is φ = 15972768000.

The previous prime is 40331243177. The next prime is 40331243279. The reversal of 40331243240 is 4234213304.

It can be written as a sum of positive squares in 4 ways, for example, as 35245556644 + 5085686596 = 187738^2 + 71314^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4987451 + ... + 4995530.

Almost surely, 2^40331243240 is an apocalyptic number.

40331243240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40331243240 is an abundant number, since it is smaller than the sum of its proper divisors (51312531520).

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

40331243240 is a wasteful number, since it uses less digits than its factorization.

40331243240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9983093 (or 9983089 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 40331243240 its reverse (4234213304), we get a palindrome (44565456544).

The spelling of 40331243240 in words is "forty billion, three hundred thirty-one million, two hundred forty-three thousand, two hundred forty".