2131404210 has 48 divisors (see below), whose sum is σ = 5967935064. Its totient is φ = 524653056.

The previous prime is 2131404199. The next prime is 2131404217. The reversal of 2131404210 is 124041312.

2131404210 is a `hidden beast` number, since 21 + 31 + 404 + 210 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1586508561 + 544895649 = 39831^2 + 23343^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2131404217) 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 23 ways as a sum of consecutive naturals, for example, 909687 + ... + 912026.

Almost surely, 2^2131404210 is an apocalyptic number.

2131404210 is an abundant number, since it is smaller than the sum of its proper divisors (3836530854).

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

2131404210 is a wasteful number, since it uses less digits than its factorization.

2131404210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821739 (or 1821736 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2131404210 is about 46167.1334392769. The cubic root of 2131404210 is about 1286.9310315988.

Adding to 2131404210 its reverse (124041312), we get a palindrome (2255445522).

The spelling of 2131404210 in words is "two billion, one hundred thirty-one million, four hundred four thousand, two hundred ten".