131312229 has 8 divisors (see below), whose sum is σ = 178050720. Its totient is φ = 86057616.

The previous prime is 131312227. The next prime is 131312243. The reversal of 131312229 is 922213131.

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

It is not a de Polignac number, because 131312229 - 2¹ = 131312227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131312199 and 131312208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312227) 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, 370762 + ... + 371115.

It is an arithmetic number, because the mean of its divisors is an integer number (22256340).

Almost surely, 2^131312229 is an apocalyptic number.

It is an amenable number.

131312229 is a deficient number, since it is larger than the sum of its proper divisors (46738491).

131312229 is an equidigital number, since it uses as much as digits as its factorization.

131312229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741939.

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

The square root of 131312229 is about 11459.1548117651. The cubic root of 131312229 is about 508.2784823255.

The spelling of 131312229 in words is "one hundred thirty-one million, three hundred twelve thousand, two hundred twenty-nine".