40432231 has 8 divisors (see below), whose sum is σ = 47457440. Its totient is φ = 33719328.

The previous prime is 40432211. The next prime is 40432237. The reversal of 40432231 is 13223404.

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 40432231 - 2⁵ = 40432199 is a prime.

It is a super-2 number, since 2×40432231² = 3269530607274722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40432199 and 40432208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40432237) 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, 77796 + ... + 78313.

It is an arithmetic number, because the mean of its divisors is an integer number (5932180).

Almost surely, 2^40432231 is an apocalyptic number.

40432231 is a deficient number, since it is larger than the sum of its proper divisors (7025209).

40432231 is a wasteful number, since it uses less digits than its factorization.

40432231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156153.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40432231 is about 6358.6343659626. The cubic root of 40432231 is about 343.2226198046. Note that the first 3 decimals are identical.

Adding to 40432231 its reverse (13223404), we get a palindrome (53655635).

The spelling of 40432231 in words is "forty million, four hundred thirty-two thousand, two hundred thirty-one".