31120100320212 has 24 divisors (see below), whose sum is σ = 80681741571200. Its totient is φ = 10373366773368.

The previous prime is 31120100320163. The next prime is 31120100320261. The reversal of 31120100320212 is 21202300102113.

31120100320212 is a `hidden beast` number, since 3 + 1 + 120 + 10 + 0 + 320 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (31120100320163) and next prime (31120100320261).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144074538412 + ... + 144074538627.

Almost surely, 2^{31120100320212} is an apocalyptic number.

It is an amenable number.

31120100320212 is an abundant number, since it is smaller than the sum of its proper divisors (49561641250988).

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

31120100320212 is a wasteful number, since it uses less digits than its factorization.

31120100320212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288149077052 (or 288149077044 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31120100320212 its reverse (21202300102113), we get a palindrome (52322400422325).

The spelling of 31120100320212 in words is "thirty-one trillion, one hundred twenty billion, one hundred million, three hundred twenty thousand, two hundred twelve".