204156103 has 2 divisors, whose sum is σ = 204156104. Its totient is φ = 204156102.

The previous prime is 204156091. The next prime is 204156137. The reversal of 204156103 is 301651402.

204156103 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204156103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204156503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102078051 + 102078052.

It is an arithmetic number, because the mean of its divisors is an integer number (102078052).

Almost surely, 2^204156103 is an apocalyptic number.

204156103 is a deficient number, since it is larger than the sum of its proper divisors (1).

204156103 is an equidigital number, since it uses as much as digits as its factorization.

204156103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 204156103 is about 14288.3205101229. The cubic root of 204156103 is about 588.8266472817.

The spelling of 204156103 in words is "two hundred four million, one hundred fifty-six thousand, one hundred three".