1023203020 has 48 divisors (see below), whose sum is σ = 2495965248. Its totient is φ = 345058560.

The previous prime is 1023203003. The next prime is 1023203033. The reversal of 1023203020 is 203023201.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51367 + ... + 68446.

It is an arithmetic number, because the mean of its divisors is an integer number (51999276).

Almost surely, 2^1023203020 is an apocalyptic number.

1023203020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1023203020 is an abundant number, since it is smaller than the sum of its proper divisors (1472762228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1023203020 is a wasteful number, since it uses less digits than its factorization.

1023203020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119890 (or 119888 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 1023203020 is about 31987.5447635482. The cubic root of 1023203020 is about 1007.6752793699.

Adding to 1023203020 its reverse (203023201), we get a palindrome (1226226221).

The spelling of 1023203020 in words is "one billion, twenty-three million, two hundred three thousand, twenty".