31120211313120 has 96 divisors (see below), whose sum is σ = 98029444357152. Its totient is φ = 8298657093632.

The previous prime is 31120211313119. The next prime is 31120211313167. The reversal of 31120211313120 is 2131311202113.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104997454 + ... + 105293426.

It is an arithmetic number, because the mean of its divisors is an integer number (1021140045387).

Almost surely, 2^{31120211313120} is an apocalyptic number.

31120211313120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31120211313120 is an abundant number, since it is smaller than the sum of its proper divisors (66909233044032).

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

31120211313120 is a wasteful number, since it uses less digits than its factorization.

31120211313120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 515044 (or 515036 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 31120211313120 its reverse (2131311202113), we get a palindrome (33251522515233).

The spelling of 31120211313120 in words is "thirty-one trillion, one hundred twenty billion, two hundred eleven million, three hundred thirteen thousand, one hundred twenty".