31200120120211 has 8 divisors (see below), whose sum is σ = 35817178256384. Its totient is φ = 26623036513800.

The previous prime is 31200120120193. The next prime is 31200120120271. The reversal of 31200120120211 is 11202102100213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31200120120211 - 2⁷ = 31200120120083 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31200120120271) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9993630765 + ... + 9993633886.

It is an arithmetic number, because the mean of its divisors is an integer number (4477147282048).

Almost surely, 2^{31200120120211} is an apocalyptic number.

31200120120211 is a deficient number, since it is larger than the sum of its proper divisors (4617058136173).

31200120120211 is a wasteful number, since it uses less digits than its factorization.

31200120120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19987264881.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 31200120120211 its reverse (11202102100213), we get a palindrome (42402222220424).

The spelling of 31200120120211 in words is "thirty-one trillion, two hundred billion, one hundred twenty million, one hundred twenty thousand, two hundred eleven".