131004305 has 4 divisors (see below), whose sum is σ = 157205172. Its totient is φ = 104803440.

The previous prime is 131004299. The next prime is 131004311. The reversal of 131004305 is 503400131.

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

It is an interprime number because it is at equal distance from previous prime (131004299) and next prime (131004311).

It can be written as a sum of positive squares in 2 ways, for example, as 100721296 + 30283009 = 10036^2 + 5503^2 .

It is not a de Polignac number, because 131004305 - 2²² = 126810001 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, 13100426 + ... + 13100435.

It is an arithmetic number, because the mean of its divisors is an integer number (39301293).

Almost surely, 2^131004305 is an apocalyptic number.

It is an amenable number.

131004305 is a deficient number, since it is larger than the sum of its proper divisors (26200867).

131004305 is an equidigital number, since it uses as much as digits as its factorization.

131004305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26200866.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 131004305 is about 11445.7112055127. The cubic root of 131004305 is about 507.8808711193.

Adding to 131004305 its reverse (503400131), we get a palindrome (634404436).

The spelling of 131004305 in words is "one hundred thirty-one million, four thousand, three hundred five".