23540134442431 has 4 divisors (see below), whose sum is σ = 23540148459072. Its totient is φ = 23540120425792.

The previous prime is 23540134442401. The next prime is 23540134442443. The reversal of 23540134442431 is 13424443104532.

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 23540134442431 - 2⁵ = 23540134442399 is a prime.

It is a super-2 number, since 2×23540134442431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23540134442401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4081810 + ... + 7983823.

It is an arithmetic number, because the mean of its divisors is an integer number (5885037114768).

Almost surely, 2^{23540134442431} is an apocalyptic number.

23540134442431 is a deficient number, since it is larger than the sum of its proper divisors (14016641).

23540134442431 is a wasteful number, since it uses less digits than its factorization.

23540134442431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14016640.

The product of its (nonzero) digits is 552960, while the sum is 40.

Adding to 23540134442431 its reverse (13424443104532), we get a palindrome (36964577546963).

The spelling of 23540134442431 in words is "twenty-three trillion, five hundred forty billion, one hundred thirty-four million, four hundred forty-two thousand, four hundred thirty-one".