210131743121 has 4 divisors (see below), whose sum is σ = 210570432000. Its totient is φ = 209693054244.

The previous prime is 210131743111. The next prime is 210131743123. The reversal of 210131743121 is 121347131012.

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 a cyclic number.

It is not a de Polignac number, because 210131743121 - 2¹⁰ = 210131742097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210131743123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219343721 + ... + 219344678.

It is an arithmetic number, because the mean of its divisors is an integer number (52642608000).

Almost surely, 2^210131743121 is an apocalyptic number.

It is an amenable number.

210131743121 is a deficient number, since it is larger than the sum of its proper divisors (438688879).

210131743121 is an equidigital number, since it uses as much as digits as its factorization.

210131743121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438688878.

The product of its (nonzero) digits is 1008, while the sum is 26.

Adding to 210131743121 its reverse (121347131012), we get a palindrome (331478874133).

The spelling of 210131743121 in words is "two hundred ten billion, one hundred thirty-one million, seven hundred forty-three thousand, one hundred twenty-one".