10023123111 has 4 divisors (see below), whose sum is σ = 13364164152. Its totient is φ = 6682082072.

The previous prime is 10023123059. The next prime is 10023123157. The reversal of 10023123111 is 11132132001.

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 10023123111 - 2⁷ = 10023122983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10023123191) 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, 1670520516 + ... + 1670520521.

It is an arithmetic number, because the mean of its divisors is an integer number (3341041038).

Almost surely, 2^10023123111 is an apocalyptic number.

10023123111 is a deficient number, since it is larger than the sum of its proper divisors (3341041041).

10023123111 is an equidigital number, since it uses as much as digits as its factorization.

10023123111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3341041040.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 10023123111 its reverse (11132132001), we get a palindrome (21155255112).

The spelling of 10023123111 in words is "ten billion, twenty-three million, one hundred twenty-three thousand, one hundred eleven".