10001331123 has 32 divisors (see below), whose sum is σ = 15942873600. Its totient is φ = 5455946496.

The previous prime is 10001331097. The next prime is 10001331161. The reversal of 10001331123 is 32113310001.

It is not a de Polignac number, because 10001331123 - 2⁵ = 10001331091 is a prime.

It is a super-2 number, since 2×10001331123² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10001331163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38061 + ... + 146462.

It is an arithmetic number, because the mean of its divisors is an integer number (498214800).

Almost surely, 2^10001331123 is an apocalyptic number.

10001331123 is a deficient number, since it is larger than the sum of its proper divisors (5941542477).

10001331123 is a wasteful number, since it uses less digits than its factorization.

10001331123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184651.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 10001331123 its reverse (32113310001), we get a palindrome (42114641124).

The spelling of 10001331123 in words is "ten billion, one million, three hundred thirty-one thousand, one hundred twenty-three".