131203120323 has 16 divisors (see below), whose sum is σ = 195998766336. Its totient is φ = 77367932640.

The previous prime is 131203120291. The next prime is 131203120343. The reversal of 131203120323 is 323021302131.

It is not a de Polignac number, because 131203120323 - 2⁵ = 131203120291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 131203120323.

It is not an unprimeable number, because it can be changed into a prime (131203120343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53726511 + ... + 53728952.

It is an arithmetic number, because the mean of its divisors is an integer number (12249922896).

Almost surely, 2^131203120323 is an apocalyptic number.

131203120323 is a deficient number, since it is larger than the sum of its proper divisors (64795646013).

131203120323 is a wasteful number, since it uses less digits than its factorization.

131203120323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107455514.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 131203120323 its reverse (323021302131), we get a palindrome (454224422454).

The spelling of 131203120323 in words is "one hundred thirty-one billion, two hundred three million, one hundred twenty thousand, three hundred twenty-three".