131604523343 has 4 divisors (see below), whose sum is σ = 134814389808. Its totient is φ = 128394656880.

The previous prime is 131604523277. The next prime is 131604523363. The reversal of 131604523343 is 343325406131.

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

It is a cyclic number.

It is not a de Polignac number, because 131604523343 - 2²⁶ = 131537414479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131604523363) 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, 1604933171 + ... + 1604933252.

It is an arithmetic number, because the mean of its divisors is an integer number (33703597452).

Almost surely, 2^131604523343 is an apocalyptic number.

131604523343 is a deficient number, since it is larger than the sum of its proper divisors (3209866465).

131604523343 is an equidigital number, since it uses as much as digits as its factorization.

131604523343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3209866464.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 131604523343 its reverse (343325406131), we get a palindrome (474929929474).

The spelling of 131604523343 in words is "one hundred thirty-one billion, six hundred four million, five hundred twenty-three thousand, three hundred forty-three".