1011920203 has 4 divisors (see below), whose sum is σ = 1156480240. Its totient is φ = 867360168.

The previous prime is 1011920191. The next prime is 1011920207. The reversal of 1011920203 is 3020291101.

1011920203 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3020291101 = 29 ⋅104147969.

It is a cyclic number.

It is not a de Polignac number, because 1011920203 - 2¹⁷ = 1011789131 is a prime.

It is a super-2 number, since 2×1011920203² = 2047964994479122418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011920207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72280008 + ... + 72280021.

It is an arithmetic number, because the mean of its divisors is an integer number (289120060).

Almost surely, 2^1011920203 is an apocalyptic number.

1011920203 is a deficient number, since it is larger than the sum of its proper divisors (144560037).

1011920203 is an equidigital number, since it uses as much as digits as its factorization.

1011920203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144560036.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1011920203 is about 31810.6932178474. The cubic root of 1011920203 is about 1003.9577168137.

The spelling of 1011920203 in words is "one billion, eleven million, nine hundred twenty thousand, two hundred three".