131423535 has 12 divisors (see below), whose sum is σ = 227800872. Its totient is φ = 70092528.

The previous prime is 131423483. The next prime is 131423599. The reversal of 131423535 is 535324131.

It is not a de Polignac number, because 131423535 - 2⁹ = 131423023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131423499 and 131423508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1460217 + ... + 1460306.

It is an arithmetic number, because the mean of its divisors is an integer number (18983406).

Almost surely, 2^131423535 is an apocalyptic number.

131423535 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131423535 is a deficient number, since it is larger than the sum of its proper divisors (96377337).

131423535 is a wasteful number, since it uses less digits than its factorization.

131423535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920534 (or 2920531 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 131423535 is about 11464.0104239311. The cubic root of 131423535 is about 508.4220548059.

Adding to 131423535 its reverse (535324131), we get a palindrome (666747666).

The spelling of 131423535 in words is "one hundred thirty-one million, four hundred twenty-three thousand, five hundred thirty-five".