231011012100123 has 12 divisors (see below), whose sum is σ = 333756413006640. Its totient is φ = 153973261412496.

The previous prime is 231011012100109. The next prime is 231011012100137. The reversal of 231011012100123 is 321001210110132.

231011012100123 is a `hidden beast` number, since 2 + 310 + 110 + 121 + 0 + 0 + 123 = 666.

It is an interprime number because it is at equal distance from previous prime (231011012100109) and next prime (231011012100137).

It is not a de Polignac number, because 231011012100123 - 2¹² = 231011012096027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231011012100096 and 231011012100105.

It is not an unprimeable number, because it can be changed into a prime (231011012100103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2839956036 + ... + 2840037377.

It is an arithmetic number, because the mean of its divisors is an integer number (27813034417220).

Almost surely, 2^{231011012100123} is an apocalyptic number.

231011012100123 is a deficient number, since it is larger than the sum of its proper divisors (102745400906517).

231011012100123 is a wasteful number, since it uses less digits than its factorization.

231011012100123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5679997938 (or 5679997935 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 231011012100123 its reverse (321001210110132), we get a palindrome (552012222210255).

The spelling of 231011012100123 in words is "two hundred thirty-one trillion, eleven billion, twelve million, one hundred thousand, one hundred twenty-three".