101311330123 has 4 divisors (see below), whose sum is σ = 101635008808. Its totient is φ = 100987651440.

The previous prime is 101311330103. The next prime is 101311330139. The reversal of 101311330123 is 321033113101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321033113101 = 9967 ⋅32209603.

It is a cyclic number.

It is not a de Polignac number, because 101311330123 - 2¹³ = 101311321931 is a prime.

It is a super-2 number, since 2×101311330123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101311330123.

It is not an unprimeable number, because it can be changed into a prime (101311330103) 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 3 ways as a sum of consecutive naturals, for example, 161838873 + ... + 161839498.

It is an arithmetic number, because the mean of its divisors is an integer number (25408752202).

Almost surely, 2^101311330123 is an apocalyptic number.

101311330123 is a deficient number, since it is larger than the sum of its proper divisors (323678685).

101311330123 is an equidigital number, since it uses as much as digits as its factorization.

101311330123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323678684.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 101311330123 its reverse (321033113101), we get a palindrome (422344443224).

The spelling of 101311330123 in words is "one hundred one billion, three hundred eleven million, three hundred thirty thousand, one hundred twenty-three".