109157023 has 4 divisors (see below), whose sum is σ = 109234840. Its totient is φ = 109079208.

The previous prime is 109156981. The next prime is 109157039. The reversal of 109157023 is 320751901.

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 109157023 - 2²⁵ = 75602591 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109156982 and 109157000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109157053) 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, 36765 + ... + 39622.

It is an arithmetic number, because the mean of its divisors is an integer number (27308710).

Almost surely, 2^109157023 is an apocalyptic number.

109157023 is a deficient number, since it is larger than the sum of its proper divisors (77817).

109157023 is an equidigital number, since it uses as much as digits as its factorization.

109157023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77816.

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 109157023 is about 10447.8238403985. The cubic root of 109157023 is about 477.9148891723.

The spelling of 109157023 in words is "one hundred nine million, one hundred fifty-seven thousand, twenty-three".