131205653 has 8 divisors (see below), whose sum is σ = 133062048. Its totient is φ = 129355984.

The previous prime is 131205637. The next prime is 131205661. The reversal of 131205653 is 356502131.

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

It is a cyclic number.

It is not a de Polignac number, because 131205653 - 2⁴ = 131205637 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 (131205673) 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, 47375 + ... + 50067.

It is an arithmetic number, because the mean of its divisors is an integer number (16632756).

Almost surely, 2^131205653 is an apocalyptic number.

It is an amenable number.

131205653 is a deficient number, since it is larger than the sum of its proper divisors (1856395).

131205653 is an equidigital number, since it uses as much as digits as its factorization.

131205653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3363.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 131205653 is about 11454.5036121169. The cubic root of 131205653 is about 508.1409349703.

Adding to 131205653 its reverse (356502131), we get a palindrome (487707784).

The spelling of 131205653 in words is "one hundred thirty-one million, two hundred five thousand, six hundred fifty-three".