11531343512 has 32 divisors (see below), whose sum is σ = 23371059600. Its totient is φ = 5302360704.

The previous prime is 11531343511. The next prime is 11531343529. The reversal of 11531343512 is 21534313511.

11531343512 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×11531343512³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11531343511) 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 7 ways as a sum of consecutive naturals, for example, 178118 + ... + 234069.

Almost surely, 2^11531343512 is an apocalyptic number.

It is an amenable number.

11531343512 is an abundant number, since it is smaller than the sum of its proper divisors (11839716088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11531343512 is a wasteful number, since it uses less digits than its factorization.

11531343512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412475 (or 412471 counting only the distinct ones).

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

The spelling of 11531343512 in words is "eleven billion, five hundred thirty-one million, three hundred forty-three thousand, five hundred twelve".