212031131001 has 4 divisors (see below), whose sum is σ = 282708174672. Its totient is φ = 141354087332.

The previous prime is 212031130999. The next prime is 212031131003. The reversal of 212031131001 is 100131130212.

It is a happy number.

212031131001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (212031130999) and next prime (212031131003).

It is a cyclic number.

It is not a de Polignac number, because 212031131001 - 2¹ = 212031130999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212031131003) 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 3 ways as a sum of consecutive naturals, for example, 35338521831 + ... + 35338521836.

It is an arithmetic number, because the mean of its divisors is an integer number (70677043668).

Almost surely, 2^212031131001 is an apocalyptic number.

It is an amenable number.

212031131001 is a deficient number, since it is larger than the sum of its proper divisors (70677043671).

212031131001 is an equidigital number, since it uses as much as digits as its factorization.

212031131001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70677043670.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 212031131001 its reverse (100131130212), we get a palindrome (312162261213).

The spelling of 212031131001 in words is "two hundred twelve billion, thirty-one million, one hundred thirty-one thousand, one".