40233443231 has 4 divisors (see below), whose sum is σ = 40238613792. Its totient is φ = 40228272672.

The previous prime is 40233443221. The next prime is 40233443249. The reversal of 40233443231 is 13234433204.

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 40233443231 - 2³⁰ = 39159701407 is a prime.

It is a super-2 number, since 2×40233443231² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40233443194 and 40233443203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40233443221) 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, 2573591 + ... + 2589176.

It is an arithmetic number, because the mean of its divisors is an integer number (10059653448).

Almost surely, 2^40233443231 is an apocalyptic number.

40233443231 is a deficient number, since it is larger than the sum of its proper divisors (5170561).

40233443231 is an equidigital number, since it uses as much as digits as its factorization.

40233443231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170560.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 40233443231 its reverse (13234433204), we get a palindrome (53467876435).

The spelling of 40233443231 in words is "forty billion, two hundred thirty-three million, four hundred forty-three thousand, two hundred thirty-one".