40427231 has 8 divisors (see below), whose sum is σ = 45828720. Its totient is φ = 35353152.

The previous prime is 40427227. The next prime is 40427239. The reversal of 40427231 is 13272404.

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 40427231 - 2² = 40427227 is a prime.

It is a super-2 number, since 2×40427231² = 3268722012654722, 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 = 40427197 and 40427206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40427239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81590 + ... + 82083.

It is an arithmetic number, because the mean of its divisors is an integer number (5728590).

Almost surely, 2^40427231 is an apocalyptic number.

40427231 is a deficient number, since it is larger than the sum of its proper divisors (5401489).

40427231 is a wasteful number, since it uses less digits than its factorization.

40427231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163705.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 40427231 is about 6358.2411876241. The cubic root of 40427231 is about 343.2084711596.

Adding to 40427231 its reverse (13272404), we get a palindrome (53699635).

The spelling of 40427231 in words is "forty million, four hundred twenty-seven thousand, two hundred thirty-one".