40023131 has 8 divisors (see below), whose sum is σ = 40535664. Its totient is φ = 39513600.

The previous prime is 40023127. The next prime is 40023133. The reversal of 40023131 is 13132004.

40023131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40023131 - 2² = 40023127 is a prime.

It is a super-3 number, since 3×40023131³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40023133) 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 7 ways as a sum of consecutive naturals, for example, 37556 + ... + 38606.

It is an arithmetic number, because the mean of its divisors is an integer number (5066958).

Almost surely, 2^40023131 is an apocalyptic number.

40023131 is a deficient number, since it is larger than the sum of its proper divisors (512533).

40023131 is a wasteful number, since it uses less digits than its factorization.

40023131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1501.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 40023131 is about 6326.3837221591. The cubic root of 40023131 is about 342.0610990550.

Adding to 40023131 its reverse (13132004), we get a palindrome (53155135).

The spelling of 40023131 in words is "forty million, twenty-three thousand, one hundred thirty-one".