100111023 has 12 divisors (see below), whose sum is σ = 147056520. Its totient is φ = 65609136.

The previous prime is 100111007. The next prime is 100111043. The reversal of 100111023 is 320111001.

It is not a de Polignac number, because 100111023 - 2⁴ = 100111007 is a prime.

It is a super-2 number, since 2×100111023² = 20044433852213058, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100110996 and 100111014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93736 + ... + 94797.

It is an arithmetic number, because the mean of its divisors is an integer number (12254710).

Almost surely, 2^100111023 is an apocalyptic number.

100111023 is a deficient number, since it is larger than the sum of its proper divisors (46945497).

100111023 is a wasteful number, since it uses less digits than its factorization.

100111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188598 (or 188595 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 100111023 is about 10005.5496100914. The cubic root of 100111023 is about 464.3305942031.

Adding to 100111023 its reverse (320111001), we get a palindrome (420222024).

The spelling of 100111023 in words is "one hundred million, one hundred eleven thousand, twenty-three".