231303142242 has 16 divisors (see below), whose sum is σ = 514006982880. Its totient is φ = 77101047396.

The previous prime is 231303142223. The next prime is 231303142271. The reversal of 231303142242 is 242241303132.

231303142242 is a `hidden beast` number, since 231 + 3 + 0 + 3 + 1 + 422 + 4 + 2 = 666.

It is a super-2 number, since 2×231303142242² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2141695708 + ... + 2141695815.

It is an arithmetic number, because the mean of its divisors is an integer number (32125436430).

Almost surely, 2^231303142242 is an apocalyptic number.

231303142242 is an abundant number, since it is smaller than the sum of its proper divisors (282703840638).

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

231303142242 is a wasteful number, since it uses less digits than its factorization.

231303142242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283391534 (or 4283391528 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 231303142242 its reverse (242241303132), we get a palindrome (473544445374).

The spelling of 231303142242 in words is "two hundred thirty-one billion, three hundred three million, one hundred forty-two thousand, two hundred forty-two".