131564203123 has 8 divisors (see below), whose sum is σ = 136396861776. Its totient is φ = 126808867200.

The previous prime is 131564203109. The next prime is 131564203139. The reversal of 131564203123 is 321302465131.

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

It is a de Polignac number, because none of the positive numbers 2^k-131564203123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131564203103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19327218 + ... + 19334023.

It is an arithmetic number, because the mean of its divisors is an integer number (17049607722).

Almost surely, 2^131564203123 is an apocalyptic number.

131564203123 is a deficient number, since it is larger than the sum of its proper divisors (4832658653).

131564203123 is an equidigital number, since it uses as much as digits as its factorization.

131564203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38661365.

The product of its (nonzero) digits is 12960, while the sum is 31.

Adding to 131564203123 its reverse (321302465131), we get a palindrome (452866668254).

The spelling of 131564203123 in words is "one hundred thirty-one billion, five hundred sixty-four million, two hundred three thousand, one hundred twenty-three".