13145320023 has 16 divisors (see below), whose sum is σ = 20245199616. Its totient is φ = 7498221440.

The previous prime is 13145320009. The next prime is 13145320049. The reversal of 13145320023 is 32002354131.

It is a cyclic number.

It is not a de Polignac number, because 13145320023 - 2¹⁷ = 13145188951 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13145319975 and 13145320002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13145320093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11715411 + ... + 11716532.

It is an arithmetic number, because the mean of its divisors is an integer number (1265324976).

Almost surely, 2^13145320023 is an apocalyptic number.

13145320023 is a deficient number, since it is larger than the sum of its proper divisors (7099879593).

13145320023 is a wasteful number, since it uses less digits than its factorization.

13145320023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23431974.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 13145320023 its reverse (32002354131), we get a palindrome (45147674154).

The spelling of 13145320023 in words is "thirteen billion, one hundred forty-five million, three hundred twenty thousand, twenty-three".