131102304041521 has 4 divisors (see below), whose sum is σ = 131125794873844. Its totient is φ = 131078813209200.

The previous prime is 131102304041477. The next prime is 131102304041561. The reversal of 131102304041521 is 125140403201131.

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 62004049290225 + 69098254751296 = 7874265^2 + 8312536^2 .

It is a cyclic number.

It is not a de Polignac number, because 131102304041521 - 2¹⁷ = 131102303910449 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 131102304041521.

It is not an unprimeable number, because it can be changed into a prime (131102304041561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11745407790 + ... + 11745418951.

It is an arithmetic number, because the mean of its divisors is an integer number (32781448718461).

Almost surely, 2^{131102304041521} is an apocalyptic number.

It is an amenable number.

131102304041521 is a deficient number, since it is larger than the sum of its proper divisors (23490832323).

131102304041521 is an equidigital number, since it uses as much as digits as its factorization.

131102304041521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23490832322.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 131102304041521 its reverse (125140403201131), we get a palindrome (256242707242652).

The spelling of 131102304041521 in words is "one hundred thirty-one trillion, one hundred two billion, three hundred four million, forty-one thousand, five hundred twenty-one".