208106902331 has 8 divisors (see below), whose sum is σ = 212041627200. Its totient is φ = 204172480512.

The previous prime is 208106902319. The next prime is 208106902337. The reversal of 208106902331 is 133209601802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208106902331 is a prime.

It is a super-2 number, since 2×208106902331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 208106902291 and 208106902300.

It is not an unprimeable number, because it can be changed into a prime (208106902337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1700411 + ... + 1818683.

It is an arithmetic number, because the mean of its divisors is an integer number (26505203400).

Almost surely, 2^208106902331 is an apocalyptic number.

208106902331 is a deficient number, since it is larger than the sum of its proper divisors (3934724869).

208106902331 is a wasteful number, since it uses less digits than its factorization.

208106902331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151525.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 208106902331 in words is "two hundred eight billion, one hundred six million, nine hundred two thousand, three hundred thirty-one".