31330212243242 has 32 divisors (see below), whose sum is σ = 53967072614400. Its totient is φ = 13491189759600.

The previous prime is 31330212243229. The next prime is 31330212243271. The reversal of 31330212243242 is 24234221203313.

It is a junction number, because it is equal to n+sod(n) for n = 31330212243199 and 31330212243208.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19322759 + ... + 20881317.

It is an arithmetic number, because the mean of its divisors is an integer number (1686471019200).

Almost surely, 2^{31330212243242} is an apocalyptic number.

31330212243242 is a deficient number, since it is larger than the sum of its proper divisors (22636860371158).

31330212243242 is a wasteful number, since it uses less digits than its factorization.

31330212243242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606682.

The product of its (nonzero) digits is 41472, while the sum is 32.

Adding to 31330212243242 its reverse (24234221203313), we get a palindrome (55564433446555).

The spelling of 31330212243242 in words is "thirty-one trillion, three hundred thirty billion, two hundred twelve million, two hundred forty-three thousand, two hundred forty-two".