205070923 has 4 divisors (see below), whose sum is σ = 205121448. Its totient is φ = 205020400.

The previous prime is 205070911. The next prime is 205070927. The reversal of 205070923 is 329070502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 329070502 = 2 ⋅164535251.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-205070923 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205070891 and 205070900.

It is not an unprimeable number, because it can be changed into a prime (205070927) 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, 18586 + ... + 27487.

It is an arithmetic number, because the mean of its divisors is an integer number (51280362).

Almost surely, 2^205070923 is an apocalyptic number.

205070923 is a deficient number, since it is larger than the sum of its proper divisors (50525).

205070923 is an equidigital number, since it uses as much as digits as its factorization.

205070923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50524.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 205070923 is about 14320.2975876900. The cubic root of 205070923 is about 589.7048442294.

The spelling of 205070923 in words is "two hundred five million, seventy thousand, nine hundred twenty-three".