1031101213123 has 4 divisors (see below), whose sum is σ = 1031108792760. Its totient is φ = 1031093633488.

The previous prime is 1031101213117. The next prime is 1031101213151. The reversal of 1031101213123 is 3213121011301.

1031101213123 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 a cyclic number.

It is not a de Polignac number, because 1031101213123 - 2⁹ = 1031101212611 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 1031101213123.

It is not an unprimeable number, because it can be changed into a prime (1031101213223) 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, 3581965 + ... + 3859102.

It is an arithmetic number, because the mean of its divisors is an integer number (257777198190).

Almost surely, 2^{1031101213123} is an apocalyptic number.

1031101213123 is a deficient number, since it is larger than the sum of its proper divisors (7579637).

1031101213123 is an equidigital number, since it uses as much as digits as its factorization.

1031101213123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7579636.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1031101213123 its reverse (3213121011301), we get a palindrome (4244222224424).

The spelling of 1031101213123 in words is "one trillion, thirty-one billion, one hundred one million, two hundred thirteen thousand, one hundred twenty-three".