131205351 has 8 divisors (see below), whose sum is σ = 176318464. Its totient is φ = 86781240.

The previous prime is 131205323. The next prime is 131205359. The reversal of 131205351 is 153502131.

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

It is not a de Polignac number, because 131205351 - 2⁶ = 131205287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131205359) 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, 171805 + ... + 172566.

It is an arithmetic number, because the mean of its divisors is an integer number (22039808).

Almost surely, 2^131205351 is an apocalyptic number.

131205351 is a deficient number, since it is larger than the sum of its proper divisors (45113113).

131205351 is a wasteful number, since it uses less digits than its factorization.

131205351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344501.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 131205351 is about 11454.4904295215. The cubic root of 131205351 is about 508.1405451022.

Adding to 131205351 its reverse (153502131), we get a palindrome (284707482).

The spelling of 131205351 in words is "one hundred thirty-one million, two hundred five thousand, three hundred fifty-one".