206413560631 has 2 divisors, whose sum is σ = 206413560632. Its totient is φ = 206413560630.

The previous prime is 206413560607. The next prime is 206413560677. The reversal of 206413560631 is 136065314602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206413560631 - 2²³ = 206405172023 is a prime.

It is a super-2 number, since 2×206413560631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206413560131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103206780315 + 103206780316.

It is an arithmetic number, because the mean of its divisors is an integer number (103206780316).

Almost surely, 2^206413560631 is an apocalyptic number.

206413560631 is a deficient number, since it is larger than the sum of its proper divisors (1).

206413560631 is an equidigital number, since it uses as much as digits as its factorization.

206413560631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 206413560631 in words is "two hundred six billion, four hundred thirteen million, five hundred sixty thousand, six hundred thirty-one".