231113211000 has 384 divisors, whose sum is σ = 847063526400. Its totient is φ = 51391756800.

The previous prime is 231113210987. The next prime is 231113211053. The reversal of 231113211000 is 112311132.

It is a happy number.

231113211000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 28744981 + ... + 28753019.

It is an arithmetic number, because the mean of its divisors is an integer number (2205894600).

Almost surely, 2^231113211000 is an apocalyptic number.

231113211000 is a gapful number since it is divisible by the number (20) 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 231113211000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423531763200).

231113211000 is an abundant number, since it is smaller than the sum of its proper divisors (615950315400).

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

231113211000 is a wasteful number, since it uses less digits than its factorization.

231113211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8144 (or 8093 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 231113211000 its reverse (112311132), we get a palindrome (231225522132).

The spelling of 231113211000 in words is "two hundred thirty-one billion, one hundred thirteen million, two hundred eleven thousand".