131004635 has 16 divisors (see below), whose sum is σ = 170517312. Its totient is φ = 96230400.

The previous prime is 131004613. The next prime is 131004641. The reversal of 131004635 is 536400131.

It is a happy number.

It is not a de Polignac number, because 131004635 - 2¹⁰ = 131003611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131004635.

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 15 ways as a sum of consecutive naturals, for example, 15311 + ... + 22280.

It is an arithmetic number, because the mean of its divisors is an integer number (10657332).

Almost surely, 2^131004635 is an apocalyptic number.

131004635 is a deficient number, since it is larger than the sum of its proper divisors (39512677).

131004635 is a wasteful number, since it uses less digits than its factorization.

131004635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37654.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 131004635 is about 11445.7256213837. The cubic root of 131004635 is about 507.8812975697.

Adding to 131004635 its reverse (536400131), we get a palindrome (667404766).

The spelling of 131004635 in words is "one hundred thirty-one million, four thousand, six hundred thirty-five".