1011331302123 has 4 divisors (see below), whose sum is σ = 1348441736168. Its totient is φ = 674220868080.

The previous prime is 1011331302119. The next prime is 1011331302131. The reversal of 1011331302123 is 3212031331101.

It is a happy number.

1011331302123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1011331302123 - 2² = 1011331302119 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 1011331302123.

It is not an unprimeable number, because it can be changed into a prime (1011331303123) 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, 168555217018 + ... + 168555217023.

It is an arithmetic number, because the mean of its divisors is an integer number (337110434042).

Almost surely, 2^{1011331302123} is an apocalyptic number.

1011331302123 is a deficient number, since it is larger than the sum of its proper divisors (337110434045).

1011331302123 is an equidigital number, since it uses as much as digits as its factorization.

1011331302123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337110434044.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1011331302123 its reverse (3212031331101), we get a palindrome (4223362633224).

The spelling of 1011331302123 in words is "one trillion, eleven billion, three hundred thirty-one million, three hundred two thousand, one hundred twenty-three".