101231310123 has 24 divisors (see below), whose sum is σ = 151161154560. Its totient is φ = 65214776880.

The previous prime is 101231310101. The next prime is 101231310127. The reversal of 101231310123 is 321013132101.

101231310123 is a `hidden beast` number, since 1 + 0 + 1 + 231 + 310 + 123 = 666.

It is not a de Polignac number, because 101231310123 - 2¹⁴ = 101231293739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101231310096 and 101231310105.

It is not an unprimeable number, because it can be changed into a prime (101231310127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75063 + ... + 456176.

It is an arithmetic number, because the mean of its divisors is an integer number (6298381440).

Almost surely, 2^101231310123 is an apocalyptic number.

101231310123 is a deficient number, since it is larger than the sum of its proper divisors (49929844437).

101231310123 is a wasteful number, since it uses less digits than its factorization.

101231310123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531959 (or 531956 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 101231310123 its reverse (321013132101), we get a palindrome (422244442224).

The spelling of 101231310123 in words is "one hundred one billion, two hundred thirty-one million, three hundred ten thousand, one hundred twenty-three".