208130923 has 16 divisors (see below), whose sum is σ = 279449856. Its totient is φ = 149703840.

The previous prime is 208130911. The next prime is 208130927. The reversal of 208130923 is 329031802.

It is not a de Polignac number, because 208130923 - 2¹³ = 208122731 is a prime.

It is a super-2 number, since 2×208130923² = 86636962217663858, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 208130891 and 208130900.

It is not an unprimeable number, because it can be changed into a prime (208130927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102961 + ... + 104962.

It is an arithmetic number, because the mean of its divisors is an integer number (17465616).

Almost surely, 2^208130923 is an apocalyptic number.

208130923 is a deficient number, since it is larger than the sum of its proper divisors (71318933).

208130923 is a wasteful number, since it uses less digits than its factorization.

208130923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207954.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 208130923 is about 14426.7433261981. The cubic root of 208130923 is about 592.6235013493.

It can be divided in two parts, 208 and 130923, that added together give a palindrome (131131).

The spelling of 208130923 in words is "two hundred eight million, one hundred thirty thousand, nine hundred twenty-three".