131312205 has 16 divisors (see below), whose sum is σ = 233444160. Its totient is φ = 70033104.

The previous prime is 131312201. The next prime is 131312213. The reversal of 131312205 is 502213131.

It is not a de Polignac number, because 131312205 - 2² = 131312201 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131312201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486207 + ... + 486476.

It is an arithmetic number, because the mean of its divisors is an integer number (14590260).

Almost surely, 2^131312205 is an apocalyptic number.

131312205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131312205 is a deficient number, since it is larger than the sum of its proper divisors (102131955).

131312205 is an equidigital number, since it uses as much as digits as its factorization.

131312205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972697 (or 972691 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 131312205 is about 11459.1537645674. The cubic root of 131312205 is about 508.2784513594.

Adding to 131312205 its reverse (502213131), we get a palindrome (633525336).

The spelling of 131312205 in words is "one hundred thirty-one million, three hundred twelve thousand, two hundred five".