101031010123 has 4 divisors (see below), whose sum is σ = 101031946488. Its totient is φ = 101030073760.

The previous prime is 101031010097. The next prime is 101031010127. The reversal of 101031010123 is 321010130101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 321010130101 = 367 ⋅874687003.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101031010123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101031010127) 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 3 ways as a sum of consecutive naturals, for example, 281533 + ... + 530398.

It is an arithmetic number, because the mean of its divisors is an integer number (25257986622).

Almost surely, 2^101031010123 is an apocalyptic number.

101031010123 is a deficient number, since it is larger than the sum of its proper divisors (936365).

101031010123 is an equidigital number, since it uses as much as digits as its factorization.

101031010123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936364.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 101031010123 its reverse (321010130101), we get a palindrome (422041140224).

The spelling of 101031010123 in words is "one hundred one billion, thirty-one million, ten thousand, one hundred twenty-three".