134091923 has 4 divisors (see below), whose sum is σ = 153247920. Its totient is φ = 114935928.

The previous prime is 134091899. The next prime is 134091929. The reversal of 134091923 is 329190431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329190431 = 17 ⋅19364143.

It is a cyclic number.

It is not a de Polignac number, because 134091923 - 2¹⁸ = 133829779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134091923.

It is not an unprimeable number, because it can be changed into a prime (134091929) 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, 9577988 + ... + 9578001.

It is an arithmetic number, because the mean of its divisors is an integer number (38311980).

Almost surely, 2^134091923 is an apocalyptic number.

134091923 is a deficient number, since it is larger than the sum of its proper divisors (19155997).

134091923 is an equidigital number, since it uses as much as digits as its factorization.

134091923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19155996.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 134091923 is about 11579.8066909599. The cubic root of 134091923 is about 511.8399806633.

The spelling of 134091923 in words is "one hundred thirty-four million, ninety-one thousand, nine hundred twenty-three".