131123301020123 has 16 divisors (see below), whose sum is σ = 132494558650272. Its totient is φ = 129759356160000.

The previous prime is 131123301020099. The next prime is 131123301020137. The reversal of 131123301020123 is 321020103321131.

It is a cyclic number.

It is not a de Polignac number, because 131123301020123 - 2¹⁰ = 131123301019099 is a prime.

It is a super-3 number, since 3×131123301020123³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131123301022123) 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, 232721915 + ... + 233284667.

It is an arithmetic number, because the mean of its divisors is an integer number (8280909915642).

Almost surely, 2^{131123301020123} is an apocalyptic number.

131123301020123 is a deficient number, since it is larger than the sum of its proper divisors (1371257630149).

131123301020123 is a wasteful number, since it uses less digits than its factorization.

131123301020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569246.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 131123301020123 its reverse (321020103321131), we get a palindrome (452143404341254).

The spelling of 131123301020123 in words is "one hundred thirty-one trillion, one hundred twenty-three billion, three hundred one million, twenty thousand, one hundred twenty-three".