40431131 has 8 divisors (see below), whose sum is σ = 43683024. Its totient is φ = 37199520.

The previous prime is 40431119. The next prime is 40431199. The reversal of 40431131 is 13113404.

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

It is a cyclic number.

It is not a de Polignac number, because 40431131 - 2⁶ = 40431067 is a prime.

It is a super-2 number, since 2×40431131² = 3269352707878322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40431431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785 + ... + 9026.

It is an arithmetic number, because the mean of its divisors is an integer number (5460378).

Almost surely, 2^40431131 is an apocalyptic number.

40431131 is a deficient number, since it is larger than the sum of its proper divisors (3251893).

40431131 is a wasteful number, since it uses less digits than its factorization.

40431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10141.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 40431131 is about 6358.5478688141. The cubic root of 40431131 is about 343.2195072028.

Adding to 40431131 its reverse (13113404), we get a palindrome (53544535).

The spelling of 40431131 in words is "forty million, four hundred thirty-one thousand, one hundred thirty-one".