123432315535 has 4 divisors (see below), whose sum is σ = 148118778648. Its totient is φ = 98745852424.

The previous prime is 123432315533. The next prime is 123432315551. The reversal of 123432315535 is 535513234321.

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 123432315535 - 2¹ = 123432315533 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123432315494 and 123432315503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123432315533) 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, 12343231549 + ... + 12343231558.

It is an arithmetic number, because the mean of its divisors is an integer number (37029694662).

Almost surely, 2^123432315535 is an apocalyptic number.

123432315535 is a deficient number, since it is larger than the sum of its proper divisors (24686463113).

123432315535 is an equidigital number, since it uses as much as digits as its factorization.

123432315535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24686463112.

The product of its digits is 162000, while the sum is 37.

Adding to 123432315535 its reverse (535513234321), we get a palindrome (658945549856).

The spelling of 123432315535 in words is "one hundred twenty-three billion, four hundred thirty-two million, three hundred fifteen thousand, five hundred thirty-five".