1013303020123 has 4 divisors (see below), whose sum is σ = 1013308229128. Its totient is φ = 1013297811120.

The previous prime is 1013303020111. The next prime is 1013303020151. The reversal of 1013303020123 is 3210203033101.

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

It is a cyclic number.

It is not a de Polignac number, because 1013303020123 - 2³³ = 1004713085531 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 1013303020123.

It is not an unprimeable number, because it can be changed into a prime (1013303020823) 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, 2300913 + ... + 2705698.

It is an arithmetic number, because the mean of its divisors is an integer number (253327057282).

Almost surely, 2^{1013303020123} is an apocalyptic number.

1013303020123 is a deficient number, since it is larger than the sum of its proper divisors (5209005).

1013303020123 is an equidigital number, since it uses as much as digits as its factorization.

1013303020123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5209004.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 1013303020123 its reverse (3210203033101), we get a palindrome (4223506053224).

The spelling of 1013303020123 in words is "one trillion, thirteen billion, three hundred three million, twenty thousand, one hundred twenty-three".