131212329 has 8 divisors (see below), whose sum is σ = 175030560. Its totient is φ = 87434496.

The previous prime is 131212321. The next prime is 131212343. The reversal of 131212329 is 923212131.

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

It is not a de Polignac number, because 131212329 - 2³ = 131212321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131212299 and 131212308.

It is not an unprimeable number, because it can be changed into a prime (131212321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1464 + ... + 16265.

It is an arithmetic number, because the mean of its divisors is an integer number (21878820).

Almost surely, 2^131212329 is an apocalyptic number.

It is an amenable number.

131212329 is a deficient number, since it is larger than the sum of its proper divisors (43818231).

131212329 is a wasteful number, since it uses less digits than its factorization.

131212329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20199.

The product of its digits is 648, while the sum is 24.

The square root of 131212329 is about 11454.7950221730. The cubic root of 131212329 is about 508.1495532253.

The spelling of 131212329 in words is "one hundred thirty-one million, two hundred twelve thousand, three hundred twenty-nine".