123031134402135 has 32 divisors (see below), whose sum is σ = 196892253550080. Its totient is φ = 65602460246400.

The previous prime is 123031134402131. The next prime is 123031134402181. The reversal of 123031134402135 is 531204431130321.

It is not a de Polignac number, because 123031134402135 - 2² = 123031134402131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 123031134402096 and 123031134402105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123031134402131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2029817980 + ... + 2029878590.

It is an arithmetic number, because the mean of its divisors is an integer number (6152882923440).

Almost surely, 2^{123031134402135} is an apocalyptic number.

123031134402135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

123031134402135 is a deficient number, since it is larger than the sum of its proper divisors (73861119147945).

123031134402135 is a wasteful number, since it uses less digits than its factorization.

123031134402135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87559.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 123031134402135 its reverse (531204431130321), we get a palindrome (654235565532456).

The spelling of 123031134402135 in words is "one hundred twenty-three trillion, thirty-one billion, one hundred thirty-four million, four hundred two thousand, one hundred thirty-five".