208354023 has 12 divisors (see below), whose sum is σ = 318659328. Its totient is φ = 130731840.

The previous prime is 208353991. The next prime is 208354037. The reversal of 208354023 is 320453802.

208354023 is a `hidden beast` number, since 20 + 83 + 540 + 23 = 666.

It is not a de Polignac number, because 208354023 - 2⁵ = 208353991 is a prime.

It is a super-2 number, since 2×208354023² = 86822797800569058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208354093) 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 11 ways as a sum of consecutive naturals, for example, 680743 + ... + 681048.

It is an arithmetic number, because the mean of its divisors is an integer number (26554944).

Almost surely, 2^208354023 is an apocalyptic number.

208354023 is a deficient number, since it is larger than the sum of its proper divisors (110305305).

208354023 is a wasteful number, since it uses less digits than its factorization.

208354023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1361814 (or 1361811 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 208354023 is about 14434.4734230245. The cubic root of 208354023 is about 592.8351743486.

The spelling of 208354023 in words is "two hundred eight million, three hundred fifty-four thousand, twenty-three".