131205342 has 16 divisors (see below), whose sum is σ = 262725120. Its totient is φ = 43682712.

The previous prime is 131205323. The next prime is 131205359. The reversal of 131205342 is 243502131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7492 + ... + 17847.

It is an arithmetic number, because the mean of its divisors is an integer number (16420320).

Almost surely, 2^131205342 is an apocalyptic number.

131205342 is an abundant number, since it is smaller than the sum of its proper divisors (131519778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131205342 is a wasteful number, since it uses less digits than its factorization.

131205342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26207.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 131205342 is about 11454.4900366625. The cubic root of 131205342 is about 508.1405334836.

Adding to 131205342 its reverse (243502131), we get a palindrome (374707473).

The spelling of 131205342 in words is "one hundred thirty-one million, two hundred five thousand, three hundred forty-two".