231040403022 has 128 divisors (see below), whose sum is σ = 567942036480. Its totient is φ = 61655869440.

The previous prime is 231040402991. The next prime is 231040403057. The reversal of 231040403022 is 220304040132.

231040403022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231040403022.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7661478 + ... + 7691574.

It is an arithmetic number, because the mean of its divisors is an integer number (4437047160).

Almost surely, 2^231040403022 is an apocalyptic number.

231040403022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 231040403022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283971018240).

231040403022 is an abundant number, since it is smaller than the sum of its proper divisors (336901633458).

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

231040403022 is a wasteful number, since it uses less digits than its factorization.

231040403022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30538.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 231040403022 its reverse (220304040132), we get a palindrome (451344443154).

The spelling of 231040403022 in words is "two hundred thirty-one billion, forty million, four hundred three thousand, twenty-two".