203011930 has 16 divisors (see below), whose sum is σ = 398641824. Its totient is φ = 73822480.

The previous prime is 203011927. The next prime is 203011931. The reversal of 203011930 is 39110302.

203011930 = 6370² + 6371² + ... + 6374².

It is a junction number, because it is equal to n+sod(n) for n = 203011898 and 203011907.

It is not an unprimeable number, because it can be changed into a prime (203011931) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922672 + ... + 922891.

It is an arithmetic number, because the mean of its divisors is an integer number (24915114).

Almost surely, 2^203011930 is an apocalyptic number.

203011930 is a deficient number, since it is larger than the sum of its proper divisors (195629894).

203011930 is a wasteful number, since it uses less digits than its factorization.

203011930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845581.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 203011930 is about 14248.2255035496. The cubic root of 203011930 is about 587.7245786953.

The spelling of 203011930 in words is "two hundred three million, eleven thousand, nine hundred thirty".