200981623 has 2 divisors, whose sum is σ = 200981624. Its totient is φ = 200981622.

The previous prime is 200981579. The next prime is 200981657. The reversal of 200981623 is 326189002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200981623 - 2⁹ = 200981111 is a prime.

It is a super-2 number, since 2×200981623² = 80787225567428258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200981323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100490811 + 100490812.

It is an arithmetic number, because the mean of its divisors is an integer number (100490812).

Almost surely, 2^200981623 is an apocalyptic number.

200981623 is a deficient number, since it is larger than the sum of its proper divisors (1).

200981623 is an equidigital number, since it uses as much as digits as its factorization.

200981623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 200981623 is about 14176.7987571243. The cubic root of 200981623 is about 585.7587476205.

The spelling of 200981623 in words is "two hundred million, nine hundred eighty-one thousand, six hundred twenty-three".