40131340 has 24 divisors (see below), whose sum is σ = 85114512. Its totient is φ = 15892800.

The previous prime is 40131337. The next prime is 40131349. The reversal of 40131340 is 4313104.

It is a super-2 number, since 2×40131340² = 3221048900391200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40131349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7914 + ... + 11953.

It is an arithmetic number, because the mean of its divisors is an integer number (3546438).

Almost surely, 2^40131340 is an apocalyptic number.

It is an amenable number.

40131340 is an abundant number, since it is smaller than the sum of its proper divisors (44983172).

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

40131340 is a wasteful number, since it uses less digits than its factorization.

40131340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19977 (or 19975 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 40131340 is about 6334.9301495754. The cubic root of 40131340 is about 342.3690941294.

Adding to 40131340 its reverse (4313104), we get a palindrome (44444444).

The spelling of 40131340 in words is "forty million, one hundred thirty-one thousand, three hundred forty".