1011203200 has 144 divisors (see below), whose sum is σ = 2906273250. Its totient is φ = 346644480.

The previous prime is 1011203173. The next prime is 1011203243. The reversal of 1011203200 is 23021101.

It can be written as a sum of positive squares in 3 ways, for example, as 959017024 + 52186176 = 30968^2 + 7224^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 153576 + ... + 160024.

Almost surely, 2^1011203200 is an apocalyptic number.

1011203200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1011203200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1453136625).

1011203200 is an abundant number, since it is smaller than the sum of its proper divisors (1895070050).

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

1011203200 is an equidigital number, since it uses as much as digits as its factorization.

1011203200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6487 (or 6463 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1011203200 is about 31799.4213783836. The cubic root of 1011203200 is about 1003.7205404119.

Adding to 1011203200 its reverse (23021101), we get a palindrome (1034224301).

The spelling of 1011203200 in words is "one billion, eleven million, two hundred three thousand, two hundred".