12536051231 has 4 divisors (see below), whose sum is σ = 13675692264. Its totient is φ = 11396410200.

The previous prime is 12536051221. The next prime is 12536051237. The reversal of 12536051231 is 13215063521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12536051231 is a prime.

It is a super-2 number, since 2×12536051231² (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 = 12536051194 and 12536051203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12536051237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 569820500 + ... + 569820521.

It is an arithmetic number, because the mean of its divisors is an integer number (3418923066).

Almost surely, 2^12536051231 is an apocalyptic number.

12536051231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12536051231 is a deficient number, since it is larger than the sum of its proper divisors (1139641033).

12536051231 is a wasteful number, since it uses less digits than its factorization.

12536051231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1139641032.

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

The spelling of 12536051231 in words is "twelve billion, five hundred thirty-six million, fifty-one thousand, two hundred thirty-one".