1023020011 has 16 divisors (see below), whose sum is σ = 1115553600. Its totient is φ = 932515200.

The previous prime is 1023019997. The next prime is 1023020039. The reversal of 1023020011 is 1100203201.

It is a cyclic number.

It is not a de Polignac number, because 1023020011 - 2²³ = 1014631403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1023020011.

It is not an unprimeable number, because it can be changed into a prime (1023020041) by changing a digit.

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, 659665 + ... + 661213.

It is an arithmetic number, because the mean of its divisors is an integer number (69722100).

Almost surely, 2^1023020011 is an apocalyptic number.

1023020011 is a deficient number, since it is larger than the sum of its proper divisors (92533589).

1023020011 is a wasteful number, since it uses less digits than its factorization.

1023020011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166.

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

The square root of 1023020011 is about 31984.6840065679. The cubic root of 1023020011 is about 1007.6151985461.

Adding to 1023020011 its reverse (1100203201), we get a palindrome (2123223212).

The spelling of 1023020011 in words is "one billion, twenty-three million, twenty thousand, eleven".