40431000 has 64 divisors (see below), whose sum is σ = 126154080. Its totient is φ = 10780800.

The previous prime is 40430963. The next prime is 40431011. The reversal of 40431000 is 13404.

40431000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40431000² = 3269331522000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3739 + ... + 9738.

Almost surely, 2^40431000 is an apocalyptic number.

40431000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40431000 is an abundant number, since it is smaller than the sum of its proper divisors (85723080).

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

40431000 is a wasteful number, since it uses less digits than its factorization.

40431000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13501 (or 13487 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 40431000 is about 6358.5375677116. The cubic root of 40431000 is about 343.2191365164.

Adding to 40431000 its reverse (13404), we get a palindrome (40444404).

The spelling of 40431000 in words is "forty million, four hundred thirty-one thousand".