40431145 has 8 divisors (see below), whose sum is σ = 51071040. Its totient is φ = 30642480.

The previous prime is 40431119. The next prime is 40431199. The reversal of 40431145 is 54113404.

40431145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40431145 - 2⁵ = 40431113 is a prime.

It is a super-2 number, since 2×40431145² = 3269354972022050, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 212701 + ... + 212890.

It is an arithmetic number, because the mean of its divisors is an integer number (6383880).

Almost surely, 2^40431145 is an apocalyptic number.

It is an amenable number.

40431145 is a deficient number, since it is larger than the sum of its proper divisors (10639895).

40431145 is a wasteful number, since it uses less digits than its factorization.

40431145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425615.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 40431145 is about 6358.5489696943. The cubic root of 40431145 is about 343.2195468180.

Adding to 40431145 its reverse (54113404), we get a palindrome (94544549).

The spelling of 40431145 in words is "forty million, four hundred thirty-one thousand, one hundred forty-five".