131223021332123 has 16 divisors (see below), whose sum is σ = 155084812222464. Its totient is φ = 108653169653280.

The previous prime is 131223021332083. The next prime is 131223021332141. The reversal of 131223021332123 is 321233120322131.

It is a de Polignac number, because none of the positive numbers 2^k-131223021332123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (131223021332423) 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, 542710715 + ... + 542952452.

It is an arithmetic number, because the mean of its divisors is an integer number (9692800763904).

Almost surely, 2^{131223021332123} is an apocalyptic number.

131223021332123 is a deficient number, since it is larger than the sum of its proper divisors (23861790890341).

131223021332123 is a wasteful number, since it uses less digits than its factorization.

131223021332123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085663762.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 131223021332123 its reverse (321233120322131), we get a palindrome (452456141654254).

The spelling of 131223021332123 in words is "one hundred thirty-one trillion, two hundred twenty-three billion, twenty-one million, three hundred thirty-two thousand, one hundred twenty-three".