11231856528 has 20 divisors (see below), whose sum is σ = 29015629488. Its totient is φ = 3743952160.

The previous prime is 11231856527. The next prime is 11231856529. The reversal of 11231856528 is 82565813211.

It is an interprime number because it is at equal distance from previous prime (11231856527) and next prime (11231856529).

It is a self number, because there is not a number n which added to its sum of digits gives 11231856528.

It is not an unprimeable number, because it can be changed into a prime (11231856523) 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, 116998458 + ... + 116998553.

Almost surely, 2^11231856528 is an apocalyptic number.

It is an amenable number.

11231856528 is an abundant number, since it is smaller than the sum of its proper divisors (17783772960).

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

11231856528 is a wasteful number, since it uses less digits than its factorization.

11231856528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233997022 (or 233997016 counting only the distinct ones).

The product of its digits is 115200, while the sum is 42.

The spelling of 11231856528 in words is "eleven billion, two hundred thirty-one million, eight hundred fifty-six thousand, five hundred twenty-eight".