231222320242 has 4 divisors (see below), whose sum is σ = 346833480366. Its totient is φ = 115611160120.

The previous prime is 231222320191. The next prime is 231222320281. The reversal of 231222320242 is 242023222132.

231222320242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 212946254521 + 18276065721 = 461461^2 + 135189^2 .

It is a super-2 number, since 2×231222320242² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57805580059 + ... + 57805580062.

Almost surely, 2^231222320242 is an apocalyptic number.

231222320242 is a deficient number, since it is larger than the sum of its proper divisors (115611160124).

231222320242 is a wasteful number, since it uses less digits than its factorization.

231222320242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115611160123.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 231222320242 its reverse (242023222132), we get a palindrome (473245542374).

The spelling of 231222320242 in words is "two hundred thirty-one billion, two hundred twenty-two million, three hundred twenty thousand, two hundred forty-two".