11231993500 has 288 divisors, whose sum is σ = 32171997312. Its totient is φ = 3342643200.

The previous prime is 11231993497. The next prime is 11231993503. The reversal of 11231993500 is 539913211.

It is an interprime number because it is at equal distance from previous prime (11231993497) and next prime (11231993503).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11231993503) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 10054942 + ... + 10056058.

It is an arithmetic number, because the mean of its divisors is an integer number (111708324).

Almost surely, 2^11231993500 is an apocalyptic number.

11231993500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11231993500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16085998656).

11231993500 is an abundant number, since it is smaller than the sum of its proper divisors (20940003812).

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

11231993500 is a wasteful number, since it uses less digits than its factorization.

11231993500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1161 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 34.

The spelling of 11231993500 in words is "eleven billion, two hundred thirty-one million, nine hundred ninety-three thousand, five hundred".