131323132111123 has 4 divisors (see below), whose sum is σ = 131353750705320. Its totient is φ = 131292513516928.

The previous prime is 131323132111079. The next prime is 131323132111153. The reversal of 131323132111123 is 321111231323131.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131323132111123 is a prime.

It is a super-2 number, since 2×131323132111123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 131323132111091 and 131323132111100.

It is not an unprimeable number, because it can be changed into a prime (131323132111153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15309290665 + ... + 15309299242.

It is an arithmetic number, because the mean of its divisors is an integer number (32838437676330).

Almost surely, 2^{131323132111123} is an apocalyptic number.

131323132111123 is a deficient number, since it is larger than the sum of its proper divisors (30618594197).

131323132111123 is an equidigital number, since it uses as much as digits as its factorization.

131323132111123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30618594196.

The product of its digits is 1944, while the sum is 28.

Adding to 131323132111123 its reverse (321111231323131), we get a palindrome (452434363434254).

The spelling of 131323132111123 in words is "one hundred thirty-one trillion, three hundred twenty-three billion, one hundred thirty-two million, one hundred eleven thousand, one hundred twenty-three".