1020123303 has 4 divisors (see below), whose sum is σ = 1360164408. Its totient is φ = 680082200.

The previous prime is 1020123289. The next prime is 1020123317. The reversal of 1020123303 is 3033210201.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1020123289) and next prime (1020123317).

It is a cyclic number.

It is not a de Polignac number, because 1020123303 - 2²⁴ = 1003346087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020128303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170020548 + ... + 170020553.

It is an arithmetic number, because the mean of its divisors is an integer number (340041102).

Almost surely, 2^1020123303 is an apocalyptic number.

1020123303 is a deficient number, since it is larger than the sum of its proper divisors (340041105).

1020123303 is an equidigital number, since it uses as much as digits as its factorization.

1020123303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340041104.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1020123303 is about 31939.3691703515. The cubic root of 1020123303 is about 1006.6632698865.

Adding to 1020123303 its reverse (3033210201), we get a palindrome (4053333504).

The spelling of 1020123303 in words is "one billion, twenty million, one hundred twenty-three thousand, three hundred three".