40131108 has 18 divisors (see below), whose sum is σ = 101442614. Its totient is φ = 13377024.

The previous prime is 40131071. The next prime is 40131109. The reversal of 40131108 is 80113104.

It can be written as a sum of positive squares in only one way, i.e., 38340864 + 1790244 = 6192^2 + 1338^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×40131108² = 3221011658615328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (40131109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 557341 + ... + 557412.

Almost surely, 2^40131108 is an apocalyptic number.

It is an amenable number.

40131108 is an abundant number, since it is smaller than the sum of its proper divisors (61311506).

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

40131108 is a wasteful number, since it uses less digits than its factorization.

40131108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114763 (or 1114758 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 40131108 is about 6334.9118383763. The cubic root of 40131108 is about 342.3684343808.

The spelling of 40131108 in words is "forty million, one hundred thirty-one thousand, one hundred eight".