10209131 has 8 divisors (see below), whose sum is σ = 10620720. Its totient is φ = 9801568.

The previous prime is 10209127. The next prime is 10209169. The reversal of 10209131 is 13190201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 10209131 - 2² = 10209127 is a prime.

It is a super-2 number, since 2×10209131² = 208452711550322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10209931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4820 + ... + 6606.

It is an arithmetic number, because the mean of its divisors is an integer number (1327590).

Almost surely, 2^10209131 is an apocalyptic number.

10209131 is a deficient number, since it is larger than the sum of its proper divisors (411589).

10209131 is a wasteful number, since it uses less digits than its factorization.

10209131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 10209131 is about 3195.1730782541. The cubic root of 10209131 is about 216.9349830347.

Adding to 10209131 its reverse (13190201), we get a palindrome (23399332).

The spelling of 10209131 in words is "ten million, two hundred nine thousand, one hundred thirty-one".