12355115143531 has 8 divisors (see below), whose sum is σ = 12378019953728. Its totient is φ = 12332214765000.

The previous prime is 12355115143529. The next prime is 12355115143589. The reversal of 12355115143531 is 13534151155321.

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 12355115143531 - 2¹ = 12355115143529 is a prime.

It is a super-2 number, since 2×12355115143531² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12355115143331) 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, 4499356 + ... + 6704806.

It is an arithmetic number, because the mean of its divisors is an integer number (1547252494216).

Almost surely, 2^{12355115143531} is an apocalyptic number.

12355115143531 is a deficient number, since it is larger than the sum of its proper divisors (22904810197).

12355115143531 is an equidigital number, since it uses as much as digits as its factorization.

12355115143531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215833.

The product of its digits is 135000, while the sum is 40.

Adding to 12355115143531 its reverse (13534151155321), we get a palindrome (25889266298852).

The spelling of 12355115143531 in words is "twelve trillion, three hundred fifty-five billion, one hundred fifteen million, one hundred forty-three thousand, five hundred thirty-one".