231321340042 has 8 divisors (see below), whose sum is σ = 373672933956. Its totient is φ = 106763695392.

The previous prime is 231321340039. The next prime is 231321340139. The reversal of 231321340042 is 240043123132.

It can be written as a sum of positive squares in 2 ways, for example, as 231302321721 + 19018321 = 480939^2 + 4361^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 231321339989 and 231321340016.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4448487283 + ... + 4448487334.

Almost surely, 2^231321340042 is an apocalyptic number.

231321340042 is a deficient number, since it is larger than the sum of its proper divisors (142351593914).

231321340042 is a wasteful number, since it uses less digits than its factorization.

231321340042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8896974632.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 231321340042 its reverse (240043123132), we get a palindrome (471364463174).

The spelling of 231321340042 in words is "two hundred thirty-one billion, three hundred twenty-one million, three hundred forty thousand, forty-two".