131404535 has 8 divisors (see below), whose sum is σ = 159247296. Its totient is φ = 104082400.

The previous prime is 131404529. The next prime is 131404547. The reversal of 131404535 is 535404131.

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

It is not a de Polignac number, because 131404535 - 2²⁰ = 130355959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129599 + ... + 130608.

It is an arithmetic number, because the mean of its divisors is an integer number (19905912).

Almost surely, 2^131404535 is an apocalyptic number.

131404535 is a deficient number, since it is larger than the sum of its proper divisors (27842761).

131404535 is a wasteful number, since it uses less digits than its factorization.

131404535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260313.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 131404535 is about 11463.1817136430. The cubic root of 131404535 is about 508.3975526379.

Adding to 131404535 its reverse (535404131), we get a palindrome (666808666).

The spelling of 131404535 in words is "one hundred thirty-one million, four hundred four thousand, five hundred thirty-five".