131020205 has 8 divisors (see below), whose sum is σ = 159439104. Its totient is φ = 103339600.

The previous prime is 131020199. The next prime is 131020237. The reversal of 131020205 is 502020131.

It is a happy number.

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

It is not a de Polignac number, because 131020205 - 2⁸ = 131019949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 131020205.

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, 184181 + ... + 184890.

It is an arithmetic number, because the mean of its divisors is an integer number (19929888).

Almost surely, 2^131020205 is an apocalyptic number.

It is an amenable number.

131020205 is a deficient number, since it is larger than the sum of its proper divisors (28418899).

131020205 is an equidigital number, since it uses as much as digits as its factorization.

131020205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369147.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 131020205 is about 11446.4057677509. The cubic root of 131020205 is about 507.9014174648.

Adding to 131020205 its reverse (502020131), we get a palindrome (633040336).

The spelling of 131020205 in words is "one hundred thirty-one million, twenty thousand, two hundred five".