131012205 has 8 divisors (see below), whose sum is σ = 209619552. Its totient is φ = 69873168.

The previous prime is 131012173. The next prime is 131012207. The reversal of 131012205 is 502210131.

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

It is not a de Polignac number, because 131012205 - 2⁵ = 131012173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 8734147 = 131012205 / (1 + 3 + 1 + 0 + 1 + 2 + 2 + 0 + 5).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131012207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4367059 + ... + 4367088.

It is an arithmetic number, because the mean of its divisors is an integer number (26202444).

Almost surely, 2^131012205 is an apocalyptic number.

131012205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

131012205 is a deficient number, since it is larger than the sum of its proper divisors (78607347).

131012205 is an equidigital number, since it uses as much as digits as its factorization.

131012205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8734155.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 131012205 is about 11446.0563077420. The cubic root of 131012205 is about 507.8910798887.

Adding to 131012205 its reverse (502210131), we get a palindrome (633222336).

The spelling of 131012205 in words is "one hundred thirty-one million, twelve thousand, two hundred five".