1101231303123 has 24 divisors (see below), whose sum is σ = 1708528237200. Its totient is φ = 629092289280.

The previous prime is 1101231303097. The next prime is 1101231303143. The reversal of 1101231303123 is 3213031321011.

It is a happy number.

It is not a de Polignac number, because 1101231303123 - 2¹⁰ = 1101231302099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1101231303123.

It is not an unprimeable number, because it can be changed into a prime (1101231303143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 579018 + ... + 1593023.

It is an arithmetic number, because the mean of its divisors is an integer number (71188676550).

Almost surely, 2^{1101231303123} is an apocalyptic number.

1101231303123 is a deficient number, since it is larger than the sum of its proper divisors (607296934077).

1101231303123 is a wasteful number, since it uses less digits than its factorization.

1101231303123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2175507 (or 2175500 counting only the distinct ones).

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

Adding to 1101231303123 its reverse (3213031321011), we get a palindrome (4314262624134).

The spelling of 1101231303123 in words is "one trillion, one hundred one billion, two hundred thirty-one million, three hundred three thousand, one hundred twenty-three".