1312230111023 has 4 divisors (see below), whose sum is σ = 1413170888808. Its totient is φ = 1211289333240.

The previous prime is 1312230110999. The next prime is 1312230111103. The reversal of 1312230111023 is 3201110322131.

It is a happy number.

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 1312230111023 - 2⁸ = 1312230110767 is a prime.

It is a super-2 number, since 2×1312230111023² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312230110986 and 1312230111004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312230114023) 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, 50470388873 + ... + 50470388898.

It is an arithmetic number, because the mean of its divisors is an integer number (353292722202).

Almost surely, 2^{1312230111023} is an apocalyptic number.

1312230111023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1312230111023 is a deficient number, since it is larger than the sum of its proper divisors (100940777785).

1312230111023 is a wasteful number, since it uses less digits than its factorization.

1312230111023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100940777784.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1312230111023 its reverse (3201110322131), we get a palindrome (4513340433154).

The spelling of 1312230111023 in words is "one trillion, three hundred twelve billion, two hundred thirty million, one hundred eleven thousand, twenty-three".