101243565423 has 96 divisors (see below), whose sum is σ = 201658609152. Its totient is φ = 47236089600.

The previous prime is 101243565413. The next prime is 101243565443. The reversal of 101243565423 is 324565342101.

101243565423 is a `hidden beast` number, since 1 + 0 + 12 + 43 + 565 + 42 + 3 = 666.

It is not a de Polignac number, because 101243565423 - 2⁴ = 101243565407 is a prime.

It is a super-2 number, since 2×101243565423² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101243565413) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 181468 + ... + 485198.

It is an arithmetic number, because the mean of its divisors is an integer number (2100610512).

Almost surely, 2^101243565423 is an apocalyptic number.

101243565423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

101243565423 is a deficient number, since it is larger than the sum of its proper divisors (100415043729).

101243565423 is a wasteful number, since it uses less digits than its factorization.

101243565423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303805 (or 303802 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

It can be divided in two parts, 101243 and 565423, that added together give a palindrome (666666).

The spelling of 101243565423 in words is "one hundred one billion, two hundred forty-three million, five hundred sixty-five thousand, four hundred twenty-three".