206147004331 has 2 divisors, whose sum is σ = 206147004332. Its totient is φ = 206147004330.

The previous prime is 206147004241. The next prime is 206147004337. The reversal of 206147004331 is 133400741602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 206147004331 - 2²¹ = 206144907179 is a prime.

It is a super-2 number, since 2×206147004331² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206147004293 and 206147004302.

It is not a weakly prime, because it can be changed into another prime (206147004337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103073502165 + 103073502166.

It is an arithmetic number, because the mean of its divisors is an integer number (103073502166).

Almost surely, 2^206147004331 is an apocalyptic number.

206147004331 is a deficient number, since it is larger than the sum of its proper divisors (1).

206147004331 is an equidigital number, since it uses as much as digits as its factorization.

206147004331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

Adding to 206147004331 its reverse (133400741602), we get a palindrome (339547745933).

The spelling of 206147004331 in words is "two hundred six billion, one hundred forty-seven million, four thousand, three hundred thirty-one".