31311221130230 has 16 divisors (see below), whose sum is σ = 56360305848240. Its totient is φ = 12524464493472.

The previous prime is 31311221130227. The next prime is 31311221130247. The reversal of 31311221130230 is 3203112211313.

It is a junction number, because it is equal to n+sod(n) for n = 31311221130196 and 31311221130205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3081092 + ... + 8492088.

It is an arithmetic number, because the mean of its divisors is an integer number (3522519115515).

Almost surely, 2^{31311221130230} is an apocalyptic number.

31311221130230 is a deficient number, since it is larger than the sum of its proper divisors (25049084718010).

31311221130230 is a wasteful number, since it uses less digits than its factorization.

31311221130230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5989663.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 31311221130230 its reverse (3203112211313), we get a palindrome (34514333341543).

The spelling of 31311221130230 in words is "thirty-one trillion, three hundred eleven billion, two hundred twenty-one million, one hundred thirty thousand, two hundred thirty".