208152231 has 16 divisors (see below), whose sum is σ = 330975744. Its totient is φ = 113772384.

The previous prime is 208152229. The next prime is 208152247. The reversal of 208152231 is 132251802.

It is not a de Polignac number, because 208152231 - 2¹ = 208152229 is a prime.

It is a super-2 number, since 2×208152231² = 86654702540554722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208152211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 214996 + ... + 215961.

It is an arithmetic number, because the mean of its divisors is an integer number (20685984).

Almost surely, 2^208152231 is an apocalyptic number.

208152231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

208152231 is a deficient number, since it is larger than the sum of its proper divisors (122823513).

208152231 is a wasteful number, since it uses less digits than its factorization.

208152231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430990.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 208152231 is about 14427.4817969041. The cubic root of 208152231 is about 592.6437245025.

The spelling of 208152231 in words is "two hundred eight million, one hundred fifty-two thousand, two hundred thirty-one".