231322401442 has 32 divisors (see below), whose sum is σ = 380253787200. Its totient is φ = 104668139520.

The previous prime is 231322401421. The next prime is 231322401449. The reversal of 231322401442 is 244104223132.

231322401442 is digitally balanced in base 3, 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 231322401442.

It is not an unprimeable number, because it can be changed into a prime (231322401449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4250133 + ... + 4304215.

It is an arithmetic number, because the mean of its divisors is an integer number (11882930850).

Almost surely, 2^231322401442 is an apocalyptic number.

231322401442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231322401442 is a deficient number, since it is larger than the sum of its proper divisors (148931385758).

231322401442 is a wasteful number, since it uses less digits than its factorization.

231322401442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54978.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 231322401442 its reverse (244104223132), we get a palindrome (475426624574).

The spelling of 231322401442 in words is "two hundred thirty-one billion, three hundred twenty-two million, four hundred one thousand, four hundred forty-two".