1312211110023 has 24 divisors (see below), whose sum is σ = 2067795724176. Its totient is φ = 795252873600.

The previous prime is 1312211110003. The next prime is 1312211110037. The reversal of 1312211110023 is 3200111122131.

It is not a de Polignac number, because 1312211110023 - 2¹⁴ = 1312211093639 is a prime.

It is a super-2 number, since 2×1312211110023² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1312211109978 and 1312211110005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312211110003) 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, 2988411 + ... + 3399267.

It is an arithmetic number, because the mean of its divisors is an integer number (86158155174).

Almost surely, 2^{1312211110023} is an apocalyptic number.

1312211110023 is a deficient number, since it is larger than the sum of its proper divisors (755584614153).

1312211110023 is a wasteful number, since it uses less digits than its factorization.

1312211110023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443135 (or 443132 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1312211110023 its reverse (3200111122131), we get a palindrome (4512322232154).

The spelling of 1312211110023 in words is "one trillion, three hundred twelve billion, two hundred eleven million, one hundred ten thousand, twenty-three".