31312220033230 has 32 divisors (see below), whose sum is σ = 58813577971200. Its totient is φ = 11980111669152.

The previous prime is 31312220033201. The next prime is 31312220033231. The reversal of 31312220033230 is 3233002221313.

It is a junction number, because it is equal to n+sod(n) for n = 31312220033195 and 31312220033204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31312220033231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11860311 + ... + 14258029.

It is an arithmetic number, because the mean of its divisors is an integer number (1837924311600).

Almost surely, 2^{31312220033230} is an apocalyptic number.

31312220033230 is a deficient number, since it is larger than the sum of its proper divisors (27501357937970).

31312220033230 is a wasteful number, since it uses less digits than its factorization.

31312220033230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454528.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 31312220033230 its reverse (3233002221313), we get a palindrome (34545222254543).

The spelling of 31312220033230 in words is "thirty-one trillion, three hundred twelve billion, two hundred twenty million, thirty-three thousand, two hundred thirty".