208268131 has 2 divisors, whose sum is σ = 208268132. Its totient is φ = 208268130.

The previous prime is 208268089. The next prime is 208268141. The reversal of 208268131 is 131862802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-208268131 is a prime.

It is a super-2 number, since 2×208268131² = 86751228780466322, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 208268093 and 208268102.

It is not a weakly prime, because it can be changed into another prime (208268141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104134065 + 104134066.

It is an arithmetic number, because the mean of its divisors is an integer number (104134066).

Almost surely, 2^208268131 is an apocalyptic number.

208268131 is a deficient number, since it is larger than the sum of its proper divisors (1).

208268131 is an equidigital number, since it uses as much as digits as its factorization.

208268131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 208268131 is about 14431.4978779058. The cubic root of 208268131 is about 592.7536995639.

The spelling of 208268131 in words is "two hundred eight million, two hundred sixty-eight thousand, one hundred thirty-one".