1012023203 has 4 divisors (see below), whose sum is σ = 1012404768. Its totient is φ = 1011641640.

The previous prime is 1012023193. The next prime is 1012023263. The reversal of 1012023203 is 3023202101.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3023202101 = 3739 ⋅808559.

It is a cyclic number.

It is not a de Polignac number, because 1012023203 - 2⁶ = 1012023139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012023263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186776 + ... + 192117.

It is an arithmetic number, because the mean of its divisors is an integer number (253101192).

Almost surely, 2^1012023203 is an apocalyptic number.

1012023203 is a deficient number, since it is larger than the sum of its proper divisors (381565).

1012023203 is an equidigital number, since it uses as much as digits as its factorization.

1012023203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381564.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1012023203 is about 31812.3121291113. The cubic root of 1012023203 is about 1003.9917788330.

Adding to 1012023203 its reverse (3023202101), we get a palindrome (4035225304).

The spelling of 1012023203 in words is "one billion, twelve million, twenty-three thousand, two hundred three".