10509131 has 2 divisors, whose sum is σ = 10509132. Its totient is φ = 10509130.

The previous prime is 10509101. The next prime is 10509167. The reversal of 10509131 is 13190501.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10509131 - 2¹⁴ = 10492747 is a prime.

It is a super-2 number, since 2×10509131² = 220883668750322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10509101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5254565 + 5254566.

It is an arithmetic number, because the mean of its divisors is an integer number (5254566).

Almost surely, 2^10509131 is an apocalyptic number.

10509131 is a deficient number, since it is larger than the sum of its proper divisors (1).

10509131 is an equidigital number, since it uses as much as digits as its factorization.

10509131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 135, while the sum is 20.

The square root of 10509131 is about 3241.7789869144. The cubic root of 10509131 is about 219.0394138246.

Adding to 10509131 its reverse (13190501), we get a palindrome (23699632).

The spelling of 10509131 in words is "ten million, five hundred nine thousand, one hundred thirty-one".