40235204431 has 4 divisors (see below), whose sum is σ = 40252320864. Its totient is φ = 40218088000.

The previous prime is 40235204377. The next prime is 40235204467. The reversal of 40235204431 is 13440253204.

It is a happy number.

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 40235204431 - 2¹⁵ = 40235171663 is a prime.

It is a super-2 number, since 2×40235204431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40235204431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40235204231) 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, 8554690 + ... + 8559391.

It is an arithmetic number, because the mean of its divisors is an integer number (10063080216).

Almost surely, 2^40235204431 is an apocalyptic number.

40235204431 is a deficient number, since it is larger than the sum of its proper divisors (17116433).

40235204431 is a wasteful number, since it uses less digits than its factorization.

40235204431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17116432.

The product of its (nonzero) digits is 11520, while the sum is 28.

Adding to 40235204431 its reverse (13440253204), we get a palindrome (53675457635).

The spelling of 40235204431 in words is "forty billion, two hundred thirty-five million, two hundred four thousand, four hundred thirty-one".