231303224442 has 96 divisors (see below), whose sum is σ = 517750833600. Its totient is φ = 68698361088.

The previous prime is 231303224441. The next prime is 231303224473. The reversal of 231303224442 is 244422303132.

It is a super-2 number, since 2×231303224442² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (231303224441) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 161862984 + ... + 161864412.

It is an arithmetic number, because the mean of its divisors is an integer number (5393237850).

Almost surely, 2^231303224442 is an apocalyptic number.

231303224442 is an abundant number, since it is smaller than the sum of its proper divisors (286447609158).

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

231303224442 is an frugal number, since it uses more digits than its factorization.

231303224442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1538 (or 1470 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 231303224442 its reverse (244422303132), we get a palindrome (475725527574).

The spelling of 231303224442 in words is "two hundred thirty-one billion, three hundred three million, two hundred twenty-four thousand, four hundred forty-two".