40233131 has 4 divisors (see below), whose sum is σ = 40271232. Its totient is φ = 40195032.

The previous prime is 40233119. The next prime is 40233157. The reversal of 40233131 is 13133204.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40233131 is a prime.

It is a super-2 number, since 2×40233131² = 3237409660126322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40233161) 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, 17420 + ... + 19593.

It is an arithmetic number, because the mean of its divisors is an integer number (10067808).

Almost surely, 2^40233131 is an apocalyptic number.

40233131 is a deficient number, since it is larger than the sum of its proper divisors (38101).

40233131 is a wasteful number, since it uses less digits than its factorization.

40233131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38100.

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

The square root of 40233131 is about 6342.9591674549. The cubic root of 40233131 is about 342.6583167069.

Adding to 40233131 its reverse (13133204), we get a palindrome (53366335).

It can be divided in two parts, 402 and 33131, that added together give a palindrome (33533).

The spelling of 40233131 in words is "forty million, two hundred thirty-three thousand, one hundred thirty-one".