40134235231 has 8 divisors (see below), whose sum is σ = 40189612320. Its totient is φ = 40078899168.

The previous prime is 40134235223. The next prime is 40134235259. The reversal of 40134235231 is 13253243104.

It is a happy number.

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 40134235231 - 2³ = 40134235223 is a prime.

It is a super-2 number, since 2×40134235231² (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 40134235231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40134232231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2287665 + ... + 2305141.

It is an arithmetic number, because the mean of its divisors is an integer number (5023701540).

Almost surely, 2^40134235231 is an apocalyptic number.

40134235231 is a deficient number, since it is larger than the sum of its proper divisors (55377089).

40134235231 is a wasteful number, since it uses less digits than its factorization.

40134235231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20513.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 40134235231 its reverse (13253243104), we get a palindrome (53387478335).

The spelling of 40134235231 in words is "forty billion, one hundred thirty-four million, two hundred thirty-five thousand, two hundred thirty-one".