131321020121123 has 64 divisors (see below), whose sum is σ = 155520483385344. Its totient is φ = 108572151168000.

The previous prime is 131321020121113. The next prime is 131321020121171. The reversal of 131321020121123 is 321121020123131.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 131321020121123 - 2¹⁰ = 131321020120099 is a prime.

It is a super-2 number, since 2×131321020121123² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (131321020121113) 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 63 ways as a sum of consecutive naturals, for example, 5706868688 + ... + 5706891698.

It is an arithmetic number, because the mean of its divisors is an integer number (2430007552896).

Almost surely, 2^{131321020121123} is an apocalyptic number.

131321020121123 is a deficient number, since it is larger than the sum of its proper divisors (24199463264221).

131321020121123 is a wasteful number, since it uses less digits than its factorization.

131321020121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24196.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 131321020121123 its reverse (321121020123131), we get a palindrome (452442040244254).

The spelling of 131321020121123 in words is "one hundred thirty-one trillion, three hundred twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred twenty-three".