203113030 has 16 divisors (see below), whose sum is σ = 365909904. Its totient is φ = 81177120.

The previous prime is 203113003. The next prime is 203113051. The reversal of 203113030 is 30311302.

It is a self number, because there is not a number n which added to its sum of digits gives 203113030.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5044 + ... + 20776.

It is an arithmetic number, because the mean of its divisors is an integer number (22869369).

Almost surely, 2^203113030 is an apocalyptic number.

203113030 is a deficient number, since it is larger than the sum of its proper divisors (162796874).

203113030 is a wasteful number, since it uses less digits than its factorization.

203113030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17031.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 203113030 is about 14251.7728721728. The cubic root of 203113030 is about 587.8221248413.

Adding to 203113030 its reverse (30311302), we get a palindrome (233424332).

The spelling of 203113030 in words is "two hundred three million, one hundred thirteen thousand, thirty".