23521422412531 has 4 divisors (see below), whose sum is σ = 23543549810032. Its totient is φ = 23499295015032.

The previous prime is 23521422412489. The next prime is 23521422412541. The reversal of 23521422412531 is 13521422412532.

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 23521422412531 - 2¹¹ = 23521422410483 is a prime.

It is a super-2 number, since 2×23521422412531² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23521422412541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11063697156 + ... + 11063699281.

It is an arithmetic number, because the mean of its divisors is an integer number (5885887452508).

Almost surely, 2^{23521422412531} is an apocalyptic number.

23521422412531 is a deficient number, since it is larger than the sum of its proper divisors (22127397501).

23521422412531 is a wasteful number, since it uses less digits than its factorization.

23521422412531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22127397500.

The product of its digits is 115200, while the sum is 37.

Subtracting from 23521422412531 its reverse (13521422412532), we obtain a palindrome (9999999999999).

The spelling of 23521422412531 in words is "twenty-three trillion, five hundred twenty-one billion, four hundred twenty-two million, four hundred twelve thousand, five hundred thirty-one".