2131210005 has 8 divisors (see below), whose sum is σ = 3409936032. Its totient is φ = 1136645328.

The previous prime is 2131209973. The next prime is 2131210013. The reversal of 2131210005 is 5000121312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2131210005 - 2⁵ = 2131209973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 142080667 = 2131210005 / (2 + 1 + 3 + 1 + 2 + 1 + 0 + 0 + 0 + 5).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 71040319 + ... + 71040348.

It is an arithmetic number, because the mean of its divisors is an integer number (426242004).

Almost surely, 2^2131210005 is an apocalyptic number.

It is an amenable number.

2131210005 is a deficient number, since it is larger than the sum of its proper divisors (1278726027).

2131210005 is a wasteful number, since it uses less digits than its factorization.

2131210005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142080675.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 2131210005 is about 46165.0301093804. The cubic root of 2131210005 is about 1286.8919437476.

Adding to 2131210005 its reverse (5000121312), we get a palindrome (7131331317).

The spelling of 2131210005 in words is "two billion, one hundred thirty-one million, two hundred ten thousand, five".