210131231033 has 4 divisors (see below), whose sum is σ = 222491891700. Its totient is φ = 197770570368.

The previous prime is 210131231021. The next prime is 210131231039. The reversal of 210131231033 is 330132131012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 143450047504 + 66681183529 = 378748^2 + 258227^2 .

It is a cyclic number.

It is not a de Polignac number, because 210131231033 - 2¹² = 210131226937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 210131230996 and 210131231014.

It is not an unprimeable number, because it can be changed into a prime (210131231039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6180330308 + ... + 6180330341.

It is an arithmetic number, because the mean of its divisors is an integer number (55622972925).

Almost surely, 2^210131231033 is an apocalyptic number.

It is an amenable number.

210131231033 is a deficient number, since it is larger than the sum of its proper divisors (12360660667).

210131231033 is a wasteful number, since it uses less digits than its factorization.

210131231033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12360660666.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 210131231033 its reverse (330132131012), we get a palindrome (540263362045).

The spelling of 210131231033 in words is "two hundred ten billion, one hundred thirty-one million, two hundred thirty-one thousand, thirty-three".