40131530 has 8 divisors (see below), whose sum is σ = 72236772. Its totient is φ = 16052608.

The previous prime is 40131529. The next prime is 40131541. The reversal of 40131530 is 3513104.

40131530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 38576521 + 1555009 = 6211^2 + 1247^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40131530² = 3221079400281800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40131499 and 40131508.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2006567 + ... + 2006586.

Almost surely, 2^40131530 is an apocalyptic number.

40131530 is a deficient number, since it is larger than the sum of its proper divisors (32105242).

40131530 is a wasteful number, since it uses less digits than its factorization.

40131530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4013160.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 40131530 is about 6334.9451457767. The cubic root of 40131530 is about 342.3696344388.

Adding to 40131530 its reverse (3513104), we get a palindrome (43644634).

The spelling of 40131530 in words is "forty million, one hundred thirty-one thousand, five hundred thirty".