12453311531 has 4 divisors (see below), whose sum is σ = 13108749000. Its totient is φ = 11797874064.

The previous prime is 12453311513. The next prime is 12453311581. The reversal of 12453311531 is 13511335421.

12453311531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13511335421 = 53 ⋅254930857.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12453311531 is a prime.

It is a super-2 number, since 2×12453311531² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12453311494 and 12453311503.

It is not an unprimeable number, because it can be changed into a prime (12453311501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327718706 + ... + 327718743.

It is an arithmetic number, because the mean of its divisors is an integer number (3277187250).

Almost surely, 2^12453311531 is an apocalyptic number.

12453311531 is a deficient number, since it is larger than the sum of its proper divisors (655437469).

12453311531 is an equidigital number, since it uses as much as digits as its factorization.

12453311531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655437468.

The product of its digits is 5400, while the sum is 29.

Adding to 12453311531 its reverse (13511335421), we get a palindrome (25964646952).

The spelling of 12453311531 in words is "twelve billion, four hundred fifty-three million, three hundred eleven thousand, five hundred thirty-one".