12541323431 has 16 divisors (see below), whose sum is σ = 15453582144. Its totient is φ = 9911165184.

The previous prime is 12541323409. The next prime is 12541323439. The reversal of 12541323431 is 13432314521.

It is a cyclic number.

It is not a de Polignac number, because 12541323431 - 2¹⁴ = 12541307047 is a prime.

It is a super-2 number, since 2×12541323431² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12541323394 and 12541323403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12541323439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2420 + ... + 158393.

It is an arithmetic number, because the mean of its divisors is an integer number (965848884).

Almost surely, 2^12541323431 is an apocalyptic number.

12541323431 is a deficient number, since it is larger than the sum of its proper divisors (2912258713).

12541323431 is a wasteful number, since it uses less digits than its factorization.

12541323431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161690.

The product of its digits is 8640, while the sum is 29.

Adding to 12541323431 its reverse (13432314521), we get a palindrome (25973637952).

The spelling of 12541323431 in words is "twelve billion, five hundred forty-one million, three hundred twenty-three thousand, four hundred thirty-one".