40432131 has 6 divisors (see below), whose sum is σ = 58401980. Its totient is φ = 26954748.

The previous prime is 40432111. The next prime is 40432141. The reversal of 40432131 is 13123404.

It is not a de Polignac number, because 40432131 - 2¹⁵ = 40399363 is a prime.

It is a super-2 number, since 2×40432131² = 3269514434402322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40432111) 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 5 ways as a sum of consecutive naturals, for example, 2246221 + ... + 2246238.

Almost surely, 2^40432131 is an apocalyptic number.

40432131 is a deficient number, since it is larger than the sum of its proper divisors (17969849).

40432131 is a wasteful number, since it uses less digits than its factorization.

40432131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4492465 (or 4492462 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 40432131 is about 6358.6265026340. The cubic root of 40432131 is about 343.2223368431. Note that the first 3 decimals are identical.

Adding to 40432131 its reverse (13123404), we get a palindrome (53555535).

The spelling of 40432131 in words is "forty million, four hundred thirty-two thousand, one hundred thirty-one".