31112202223120 has 40 divisors (see below), whose sum is σ = 72336546604440. Its totient is φ = 12444764513280.

The previous prime is 31112202223087. The next prime is 31112202223181. The reversal of 31112202223120 is 2132220221113.

It can be written as a sum of positive squares in 4 ways, for example, as 4672531852816 + 26439670370304 = 2161604^2 + 5141952^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 31112202223091 and 31112202223100.

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, 7059246 + ... + 10585714.

It is an arithmetic number, because the mean of its divisors is an integer number (1808413665111).

Almost surely, 2^{31112202223120} is an apocalyptic number.

It is an amenable number.

31112202223120 is an abundant number, since it is smaller than the sum of its proper divisors (41224344381320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31112202223120 is a wasteful number, since it uses less digits than its factorization.

31112202223120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636763 (or 3636757 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31112202223120 its reverse (2132220221113), we get a palindrome (33244422444233).

The spelling of 31112202223120 in words is "thirty-one trillion, one hundred twelve billion, two hundred two million, two hundred twenty-three thousand, one hundred twenty".