1023020012 has 12 divisors (see below), whose sum is σ = 2046040080. Its totient is φ = 438437136.

The previous prime is 1023019997. The next prime is 1023020039. The reversal of 1023020012 is 2100203201.

It is a happy number.

1023020012 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1023019975 and 1023020002.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18268187 + ... + 18268242.

It is an arithmetic number, because the mean of its divisors is an integer number (170503340).

Almost surely, 2^1023020012 is an apocalyptic number.

It is an amenable number.

1023020012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1023020012 is a wasteful number, since it uses less digits than its factorization.

1023020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36536440 (or 36536438 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1023020012 is about 31984.6840222004. The cubic root of 1023020012 is about 1007.6151988745.

Adding to 1023020012 its reverse (2100203201), we get a palindrome (3123223213).

The spelling of 1023020012 in words is "one billion, twenty-three million, twenty thousand, twelve".