1131320123123 has 8 divisors (see below), whose sum is σ = 1132283884560. Its totient is φ = 1130356592640.

The previous prime is 1131320123117. The next prime is 1131320123159. The reversal of 1131320123123 is 3213210231311.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1131320123123 - 2³⁴ = 1114140253939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131320123183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10566368 + ... + 10672898.

It is an arithmetic number, because the mean of its divisors is an integer number (141535485570).

Almost surely, 2^{1131320123123} is an apocalyptic number.

1131320123123 is a deficient number, since it is larger than the sum of its proper divisors (963761437).

1131320123123 is a wasteful number, since it uses less digits than its factorization.

1131320123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115477.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1131320123123 its reverse (3213210231311), we get a palindrome (4344530354434).

The spelling of 1131320123123 in words is "one trillion, one hundred thirty-one billion, three hundred twenty million, one hundred twenty-three thousand, one hundred twenty-three".