123540311335 has 16 divisors (see below), whose sum is σ = 171813007872. Its totient is φ = 83520208800.

The previous prime is 123540311327. The next prime is 123540311341. The reversal of 123540311335 is 533113045321.

It is a happy number.

It is not a de Polignac number, because 123540311335 - 2³ = 123540311327 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123540311297 and 123540311306.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24854721 + ... + 24859690.

It is an arithmetic number, because the mean of its divisors is an integer number (10738312992).

Almost surely, 2^123540311335 is an apocalyptic number.

123540311335 is a deficient number, since it is larger than the sum of its proper divisors (48272696537).

123540311335 is an equidigital number, since it uses as much as digits as its factorization.

123540311335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49714494.

The product of its (nonzero) digits is 16200, while the sum is 31.

Adding to 123540311335 its reverse (533113045321), we get a palindrome (656653356656).

The spelling of 123540311335 in words is "one hundred twenty-three billion, five hundred forty million, three hundred eleven thousand, three hundred thirty-five".