3123563613523 has 4 divisors (see below), whose sum is σ = 3166352156248. Its totient is φ = 3080775070800.

The previous prime is 3123563613493. The next prime is 3123563613529. The reversal of 3123563613523 is 3253163653213.

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 3123563613523 - 2⁵ = 3123563613491 is a prime.

It is a super-2 number, since 2×3123563613523² (a number of 26 digits) contains 22 as substring.

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 3123563613523.

It is not an unprimeable number, because it can be changed into a prime (3123563613529) 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, 21394271253 + ... + 21394271398.

It is an arithmetic number, because the mean of its divisors is an integer number (791588039062).

Almost surely, 2^{3123563613523} is an apocalyptic number.

3123563613523 is a deficient number, since it is larger than the sum of its proper divisors (42788542725).

3123563613523 is an equidigital number, since it uses as much as digits as its factorization.

3123563613523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42788542724.

The product of its digits is 874800, while the sum is 43.

The spelling of 3123563613523 in words is "three trillion, one hundred twenty-three billion, five hundred sixty-three million, six hundred thirteen thousand, five hundred twenty-three".