1023303121 has 16 divisors (see below), whose sum is σ = 1120335040. Its totient is φ = 931331520.

The previous prime is 1023303109. The next prime is 1023303137. The reversal of 1023303121 is 1213033201.

It is a cyclic number.

It is not a de Polignac number, because 1023303121 - 2²⁹ = 486432209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1023303095 and 1023303104.

It is not an unprimeable number, because it can be changed into a prime (1023303181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39571 + ... + 60103.

It is an arithmetic number, because the mean of its divisors is an integer number (70020940).

Almost surely, 2^1023303121 is an apocalyptic number.

It is an amenable number.

1023303121 is a deficient number, since it is larger than the sum of its proper divisors (97031919).

1023303121 is a wasteful number, since it uses less digits than its factorization.

1023303121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20656.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1023303121 is about 31989.1094124235. The cubic root of 1023303121 is about 1007.7081389334.

Adding to 1023303121 its reverse (1213033201), we get a palindrome (2236336322).

The spelling of 1023303121 in words is "one billion, twenty-three million, three hundred three thousand, one hundred twenty-one".