206054531 has 2 divisors, whose sum is σ = 206054532. Its totient is φ = 206054530.

The previous prime is 206054507. The next prime is 206054549. The reversal of 206054531 is 135450602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206054531 is a prime.

It is a super-2 number, since 2×206054531² = 84916939491259922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 206054531.

It is not a weakly prime, because it can be changed into another prime (206054131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103027265 + 103027266.

It is an arithmetic number, because the mean of its divisors is an integer number (103027266).

Almost surely, 2^206054531 is an apocalyptic number.

206054531 is a deficient number, since it is larger than the sum of its proper divisors (1).

206054531 is an equidigital number, since it uses as much as digits as its factorization.

206054531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 206054531 is about 14354.5996461065. The cubic root of 206054531 is about 590.6461665231.

The spelling of 206054531 in words is "two hundred six million, fifty-four thousand, five hundred thirty-one".