109016123 has 4 divisors (see below), whose sum is σ = 109646448. Its totient is φ = 108385800.

The previous prime is 109016107. The next prime is 109016143. The reversal of 109016123 is 321610901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321610901 = 71 ⋅4529731.

It is a cyclic number.

It is not a de Polignac number, because 109016123 - 2⁴ = 109016107 is a prime.

It is a super-2 number, since 2×109016123² = 23769030147902258, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109016143) 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, 314903 + ... + 315248.

It is an arithmetic number, because the mean of its divisors is an integer number (27411612).

Almost surely, 2^109016123 is an apocalyptic number.

109016123 is a deficient number, since it is larger than the sum of its proper divisors (630325).

109016123 is an equidigital number, since it uses as much as digits as its factorization.

109016123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630324.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 109016123 is about 10441.0786320188. The cubic root of 109016123 is about 477.7091696188.

The spelling of 109016123 in words is "one hundred nine million, sixteen thousand, one hundred twenty-three".