231032121021210 has 64 divisors (see below), whose sum is σ = 562850610672384. Its totient is φ = 60679915161600.

The previous prime is 231032121021199. The next prime is 231032121021277. The reversal of 231032121021210 is 12120121230132.

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 31 ways as a sum of consecutive naturals, for example, 52272471 + ... + 56519690.

It is an arithmetic number, because the mean of its divisors is an integer number (8794540791756).

Almost surely, 2^{231032121021210} is an apocalyptic number.

231032121021210 is an abundant number, since it is smaller than the sum of its proper divisors (331818489651174).

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

231032121021210 is a wasteful number, since it uses less digits than its factorization.

231032121021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108793239.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 231032121021210 its reverse (12120121230132), we get a palindrome (243152242251342).

The spelling of 231032121021210 in words is "two hundred thirty-one trillion, thirty-two billion, one hundred twenty-one million, twenty-one thousand, two hundred ten".