2131231020210 has 64 divisors (see below), whose sum is σ = 5930381986560. Its totient is φ = 543618345600.

The previous prime is 2131231020199. The next prime is 2131231020211. The reversal of 2131231020210 is 120201321312.

2131231020210 is a `hidden beast` number, since 2 + 1 + 312 + 310 + 20 + 21 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (2131231020211) 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 31 ways as a sum of consecutive naturals, for example, 171590491 + ... + 171602910.

It is an arithmetic number, because the mean of its divisors is an integer number (92662218540).

Almost surely, 2^{2131231020210} is an apocalyptic number.

2131231020210 is an abundant number, since it is smaller than the sum of its proper divisors (3799150966350).

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

2131231020210 is a wasteful number, since it uses less digits than its factorization.

2131231020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343193440 (or 343193434 counting only the distinct ones).

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

Adding to 2131231020210 its reverse (120201321312), we get a palindrome (2251432341522).

The spelling of 2131231020210 in words is "two trillion, one hundred thirty-one billion, two hundred thirty-one million, twenty thousand, two hundred ten".