210104131 has 4 divisors (see below), whose sum is σ = 215228664. Its totient is φ = 204979600.

The previous prime is 210104129. The next prime is 210104179. The reversal of 210104131 is 131401012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 210104131 - 2¹ = 210104129 is a prime.

It is a super-2 number, since 2×210104131² = 88287491726530322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210105131) 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, 2562205 + ... + 2562286.

It is an arithmetic number, because the mean of its divisors is an integer number (53807166).

Almost surely, 2^210104131 is an apocalyptic number.

210104131 is a deficient number, since it is larger than the sum of its proper divisors (5124533).

210104131 is an equidigital number, since it uses as much as digits as its factorization.

210104131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124532.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 210104131 is about 14494.9691617471. The cubic root of 210104131 is about 594.4904245241.

Adding to 210104131 its reverse (131401012), we get a palindrome (341505143).

The spelling of 210104131 in words is "two hundred ten million, one hundred four thousand, one hundred thirty-one".