200155231 has 2 divisors, whose sum is σ = 200155232. Its totient is φ = 200155230.

The previous prime is 200155217. The next prime is 200155261. The reversal of 200155231 is 132551002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200155231 - 2⁷ = 200155103 is a prime.

It is a super-2 number, since 2×200155231² = 80124232993326722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200155199 and 200155208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200155201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100077615 + 100077616.

It is an arithmetic number, because the mean of its divisors is an integer number (100077616).

Almost surely, 2^200155231 is an apocalyptic number.

200155231 is a deficient number, since it is larger than the sum of its proper divisors (1).

200155231 is an equidigital number, since it uses as much as digits as its factorization.

200155231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 200155231 is about 14147.6228038494. The cubic root of 200155231 is about 584.9548079147.

The spelling of 200155231 in words is "two hundred million, one hundred fifty-five thousand, two hundred thirty-one".