231303130042 has 4 divisors (see below), whose sum is σ = 346954695066. Its totient is φ = 115651565020.

The previous prime is 231303130033. The next prime is 231303130049. The reversal of 231303130042 is 240031303132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 128005812841 + 103297317201 = 357779^2 + 321399^2 .

It is a super-2 number, since 2×231303130042² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231303129995 and 231303130022.

It is not an unprimeable number, because it can be changed into a prime (231303130049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57825782509 + ... + 57825782512.

Almost surely, 2^231303130042 is an apocalyptic number.

231303130042 is a deficient number, since it is larger than the sum of its proper divisors (115651565024).

231303130042 is a wasteful number, since it uses less digits than its factorization.

231303130042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115651565023.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 231303130042 its reverse (240031303132), we get a palindrome (471334433174).

The spelling of 231303130042 in words is "two hundred thirty-one billion, three hundred three million, one hundred thirty thousand, forty-two".