210215435440231 has 16 divisors (see below), whose sum is σ = 227320672930848. Its totient is φ = 193243967280000.

The previous prime is 210215435440181. The next prime is 210215435440237. The reversal of 210215435440231 is 132044534512012.

It is not a de Polignac number, because 210215435440231 - 2²¹ = 210215433343079 is a prime.

It is a super-2 number, since 2×210215435440231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210215435440237) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17913241 + ... + 27227101.

It is an arithmetic number, because the mean of its divisors is an integer number (14207542058178).

Almost surely, 2^{210215435440231} is an apocalyptic number.

210215435440231 is a deficient number, since it is larger than the sum of its proper divisors (17105237490617).

210215435440231 is a wasteful number, since it uses less digits than its factorization.

210215435440231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9321042.

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 210215435440231 its reverse (132044534512012), we get a palindrome (342259969952243).

The spelling of 210215435440231 in words is "two hundred ten trillion, two hundred fifteen billion, four hundred thirty-five million, four hundred forty thousand, two hundred thirty-one".