231330340122 has 64 divisors (see below), whose sum is σ = 560803440384. Its totient is φ = 62101463040.

The previous prime is 231330340069. The next prime is 231330340123. The reversal of 231330340122 is 221043033132.

It is a junction number, because it is equal to n+sod(n) for n = 231330340092 and 231330340101.

It is not an unprimeable number, because it can be changed into a prime (231330340123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150222 + ... + 696582.

It is an arithmetic number, because the mean of its divisors is an integer number (8762553756).

Almost surely, 2^231330340122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231330340122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280401720192).

231330340122 is an abundant number, since it is smaller than the sum of its proper divisors (329473100262).

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

231330340122 is a wasteful number, since it uses less digits than its factorization.

231330340122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546983.

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 231330340122 its reverse (221043033132), we get a palindrome (452373373254).

The spelling of 231330340122 in words is "two hundred thirty-one billion, three hundred thirty million, three hundred forty thousand, one hundred twenty-two".