31330221031120 has 80 divisors (see below), whose sum is σ = 79556915031552. Its totient is φ = 11379605972480.

The previous prime is 31330221031033. The next prime is 31330221031159. The reversal of 31330221031120 is 2113012203313.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 31330221031091 and 31330221031100.

It is a congruent number.

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, 19867747 + ... + 21386626.

Almost surely, 2^{31330221031120} is an apocalyptic number.

It is an amenable number.

31330221031120 is an abundant number, since it is smaller than the sum of its proper divisors (48226694000432).

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

31330221031120 is a wasteful number, since it uses less digits than its factorization.

31330221031120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41255260 (or 41255254 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31330221031120 its reverse (2113012203313), we get a palindrome (33443233234433).

The spelling of 31330221031120 in words is "thirty-one trillion, three hundred thirty billion, two hundred twenty-one million, thirty-one thousand, one hundred twenty".