231111030122000 has 320 divisors, whose sum is σ = 651473622019584. Its totient is φ = 77651656243200.

The previous prime is 231111030121957. The next prime is 231111030122003. The reversal of 231111030122000 is 221030111132.

It is a self number, because there is not a number n which added to its sum of digits gives 231111030122000.

It is not an unprimeable number, because it can be changed into a prime (231111030122003) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 632743427 + ... + 633108573.

Almost surely, 2^{231111030122000} is an apocalyptic number.

231111030122000 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 231111030122000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325736811009792).

231111030122000 is an abundant number, since it is smaller than the sum of its proper divisors (420362591897584).

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

231111030122000 is a wasteful number, since it uses less digits than its factorization.

231111030122000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366083 (or 366067 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 231111030122000 its reverse (221030111132), we get a palindrome (231332060233132).

The spelling of 231111030122000 in words is "two hundred thirty-one trillion, one hundred eleven billion, thirty million, one hundred twenty-two thousand".