203124055 has 4 divisors (see below), whose sum is σ = 243748872. Its totient is φ = 162499240.

The previous prime is 203124013. The next prime is 203124071. The reversal of 203124055 is 550421302.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 203124055 - 2¹⁷ = 202992983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20312401 + ... + 20312410.

It is an arithmetic number, because the mean of its divisors is an integer number (60937218).

Almost surely, 2^203124055 is an apocalyptic number.

203124055 is a deficient number, since it is larger than the sum of its proper divisors (40624817).

203124055 is an equidigital number, since it uses as much as digits as its factorization.

203124055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40624816.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 203124055 is about 14252.1596609075. The cubic root of 203124055 is about 587.8327603344.

Adding to 203124055 its reverse (550421302), we get a palindrome (753545357).

The spelling of 203124055 in words is "two hundred three million, one hundred twenty-four thousand, fifty-five".