131229 has 12 divisors (see below), whose sum is σ = 216736. Its totient is φ = 74952.

The previous prime is 131221. The next prime is 131231. The reversal of 131229 is 922131.

It is a happy number.

It is not a de Polignac number, because 131229 - 2³ = 131221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 979 + ... + 1104.

2¹³¹²²⁹ is an apocalyptic number.

It is an amenable number.

131229 is a deficient number, since it is larger than the sum of its proper divisors (85507).

131229 is a wasteful number, since it uses less digits than its factorization.

131229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096 (or 2093 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 131229 is about 362.2554347418. The cubic root of 131229 is about 50.8171073059.

It can be divided in two parts, 13122 and 9, that added together give a palindrome (13131).

The spelling of 131229 in words is "one hundred thirty-one thousand, two hundred twenty-nine".