231001442242 has 4 divisors (see below), whose sum is σ = 346502163366. Its totient is φ = 115500721120.

The previous prime is 231001442233. The next prime is 231001442257. The reversal of 231001442242 is 242244100132.

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., 226080279441 + 4921162801 = 475479^2 + 70151^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57750360559 + ... + 57750360562.

Almost surely, 2^231001442242 is an apocalyptic number.

231001442242 is a deficient number, since it is larger than the sum of its proper divisors (115500721124).

231001442242 is a wasteful number, since it uses less digits than its factorization.

231001442242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115500721123.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 231001442242 its reverse (242244100132), we get a palindrome (473245542374).

The spelling of 231001442242 in words is "two hundred thirty-one billion, one million, four hundred forty-two thousand, two hundred forty-two".