131235 has 16 divisors (see below), whose sum is σ = 226464. Its totient is φ = 64512.

The previous prime is 131231. The next prime is 131249. The reversal of 131235 is 532131.

It is a happy number.

It is not a de Polignac number, because 131235 - 2² = 131231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a d-powerful number, because it can be written as 1 + 3² + 2¹⁷ + 1 + 3³ + 5³ .

It is not an unprimeable number, because it can be changed into a prime (131231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142 + ... + 531.

It is an arithmetic number, because the mean of its divisors is an integer number (14154).

2¹³¹²³⁵ is an apocalyptic number.

131235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

131235 is a deficient number, since it is larger than the sum of its proper divisors (95229).

131235 is a wasteful number, since it uses less digits than its factorization.

131235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 694.

The product of its digits is 90, while the sum is 15.

The square root of 131235 is about 362.2637160964. The cubic root of 131235 is about 50.8178817739.

Adding to 131235 its reverse (532131), we get a palindrome (663366).

The spelling of 131235 in words is "one hundred thirty-one thousand, two hundred thirty-five".