40123331 has 4 divisors (see below), whose sum is σ = 41417664. Its totient is φ = 38829000.

The previous prime is 40123313. The next prime is 40123333. The reversal of 40123331 is 13332104.

It is a happy number.

40123331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40123331 - 2¹⁰ = 40122307 is a prime.

It is a super-2 number, since 2×40123331² = 3219763381071122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40123333) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 647120 + ... + 647181.

It is an arithmetic number, because the mean of its divisors is an integer number (10354416).

Almost surely, 2^40123331 is an apocalyptic number.

40123331 is a deficient number, since it is larger than the sum of its proper divisors (1294333).

40123331 is a wasteful number, since it uses less digits than its factorization.

40123331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294332.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 40123331 is about 6334.2979879384. The cubic root of 40123331 is about 342.3463171135.

Adding to 40123331 its reverse (13332104), we get a palindrome (53455435).

It can be divided in two parts, 401 and 23331, that added together give a palindrome (23732).

The spelling of 40123331 in words is "forty million, one hundred twenty-three thousand, three hundred thirty-one".