131123221554143 has 16 divisors (see below), whose sum is σ = 161680730519616. Its totient is φ = 103554078773760.

The previous prime is 131123221554107. The next prime is 131123221554163. The reversal of 131123221554143 is 341455122321131.

It is a cyclic number.

It is not a de Polignac number, because 131123221554143 - 2⁶ = 131123221554079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131123221554097 and 131123221554106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131123221554103) 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, 1331664746 + ... + 1331763207.

It is an arithmetic number, because the mean of its divisors is an integer number (10105045657476).

Almost surely, 2^{131123221554143} is an apocalyptic number.

131123221554143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

131123221554143 is a deficient number, since it is larger than the sum of its proper divisors (30557508965473).

131123221554143 is a wasteful number, since it uses less digits than its factorization.

131123221554143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663428514.

The product of its digits is 86400, while the sum is 38.

Adding to 131123221554143 its reverse (341455122321131), we get a palindrome (472578343875274).

The spelling of 131123221554143 in words is "one hundred thirty-one trillion, one hundred twenty-three billion, two hundred twenty-one million, five hundred fifty-four thousand, one hundred forty-three".