131204105 has 4 divisors (see below), whose sum is σ = 157444932. Its totient is φ = 104963280.

The previous prime is 131204093. The next prime is 131204111. The reversal of 131204105 is 501402131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77387209 + 53816896 = 8797^2 + 7336^2 .

It is not a de Polignac number, because 131204105 - 2⁶ = 131204041 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13120406 + ... + 13120415.

It is an arithmetic number, because the mean of its divisors is an integer number (39361233).

Almost surely, 2^131204105 is an apocalyptic number.

It is an amenable number.

131204105 is a deficient number, since it is larger than the sum of its proper divisors (26240827).

131204105 is an equidigital number, since it uses as much as digits as its factorization.

131204105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26240826.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 131204105 is about 11454.4360402422. The cubic root of 131204105 is about 508.1389365674.

Adding to 131204105 its reverse (501402131), we get a palindrome (632606236).

The spelling of 131204105 in words is "one hundred thirty-one million, two hundred four thousand, one hundred five".