40468231 has 2 divisors, whose sum is σ = 40468232. Its totient is φ = 40468230.

The previous prime is 40468229. The next prime is 40468291. The reversal of 40468231 is 13286404.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40468231 - 2¹ = 40468229 is a prime.

It is a super-2 number, since 2×40468231² = 3275355440538722, which contains 22 as substring.

Together with 40468229, it forms a pair of twin primes.

It is equal to p_2460439 and since 40468231 and 2460439 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40468231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40468291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20234115 + 20234116.

It is an arithmetic number, because the mean of its divisors is an integer number (20234116).

Almost surely, 2^40468231 is an apocalyptic number.

40468231 is a deficient number, since it is larger than the sum of its proper divisors (1).

40468231 is an equidigital number, since it uses as much as digits as its factorization.

40468231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 40468231 is about 6361.4645326371. The cubic root of 40468231 is about 343.3244556308.

It can be divided in two parts, 404 and 68231, that added together give a triangular number (68635 = T₃₇₀).

The spelling of 40468231 in words is "forty million, four hundred sixty-eight thousand, two hundred thirty-one".