1101310128923 has 4 divisors (see below), whose sum is σ = 1101327328608. Its totient is φ = 1101292929240.

The previous prime is 1101310128911. The next prime is 1101310128953. The reversal of 1101310128923 is 3298210131011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101310128923 - 2¹⁰ = 1101310127899 is a prime.

It is a super-2 number, since 2×1101310128923² (a number of 25 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 1101310128923.

It is not an unprimeable number, because it can be changed into a prime (1101310128953) 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, 8503436 + ... + 8631977.

It is an arithmetic number, because the mean of its divisors is an integer number (275331832152).

Almost surely, 2^{1101310128923} is an apocalyptic number.

1101310128923 is a deficient number, since it is larger than the sum of its proper divisors (17199685).

1101310128923 is an equidigital number, since it uses as much as digits as its factorization.

1101310128923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17199684.

The product of its (nonzero) digits is 2592, while the sum is 32.

Adding to 1101310128923 its reverse (3298210131011), we get a palindrome (4399520259934).

The spelling of 1101310128923 in words is "one trillion, one hundred one billion, three hundred ten million, one hundred twenty-eight thousand, nine hundred twenty-three".