40185323 has 4 divisors (see below), whose sum is σ = 42300360. Its totient is φ = 38070288.

The previous prime is 40185319. The next prime is 40185337. The reversal of 40185323 is 32358104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40185323 - 2² = 40185319 is a prime.

It is a super-2 number, since 2×40185323² = 3229720369228658, 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 = 40185292 and 40185301.

It is not an unprimeable number, because it can be changed into a prime (40185373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057490 + ... + 1057527.

It is an arithmetic number, because the mean of its divisors is an integer number (10575090).

Almost surely, 2^40185323 is an apocalyptic number.

40185323 is a deficient number, since it is larger than the sum of its proper divisors (2115037).

40185323 is a wasteful number, since it uses less digits than its factorization.

40185323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115036.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 40185323 is about 6339.1894592290. The cubic root of 40185323 is about 342.5225388759.

The spelling of 40185323 in words is "forty million, one hundred eighty-five thousand, three hundred twenty-three".