10123331129 has 4 divisors (see below), whose sum is σ = 10133954676. Its totient is φ = 10112707584.

The previous prime is 10123331123. The next prime is 10123331131. The reversal of 10123331129 is 92113332101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7785415225 + 2337915904 = 88235^2 + 48352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10123331129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10123331098 and 10123331107.

It is not an unprimeable number, because it can be changed into a prime (10123331123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5310344 + ... + 5312249.

It is an arithmetic number, because the mean of its divisors is an integer number (2533488669).

Almost surely, 2^10123331129 is an apocalyptic number.

It is an amenable number.

10123331129 is a deficient number, since it is larger than the sum of its proper divisors (10623547).

10123331129 is an equidigital number, since it uses as much as digits as its factorization.

10123331129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10623546.

The product of its (nonzero) digits is 972, while the sum is 26.

Adding to 10123331129 its product of nonzero digits (972), we get a palindrome (10123332101).

The spelling of 10123331129 in words is "ten billion, one hundred twenty-three million, three hundred thirty-one thousand, one hundred twenty-nine".