1023203112 has 64 divisors (see below), whose sum is σ = 2646259200. Its totient is φ = 329349120.

The previous prime is 1023203099. The next prime is 1023203131. The reversal of 1023203112 is 2113023201.

It is a junction number, because it is equal to n+sod(n) for n = 1023203091 and 1023203100.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 422128 + ... + 424544.

It is an arithmetic number, because the mean of its divisors is an integer number (41347800).

Almost surely, 2^1023203112 is an apocalyptic number.

1023203112 is a gapful number since it is divisible by the number (12) 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 1023203112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1323129600).

1023203112 is an abundant number, since it is smaller than the sum of its proper divisors (1623056088).

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

1023203112 is a wasteful number, since it uses less digits than its factorization.

1023203112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3026 (or 3022 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1023203112 is about 31987.5462016079. The cubic root of 1023203112 is about 1007.6753095712.

Adding to 1023203112 its reverse (2113023201), we get a palindrome (3136226313).

The spelling of 1023203112 in words is "one billion, twenty-three million, two hundred three thousand, one hundred twelve".