123431403243102 has 24 divisors (see below), whose sum is σ = 262238344610136. Its totient is φ = 38723577487488.

The previous prime is 123431403243101. The next prime is 123431403243103. The reversal of 123431403243102 is 201342304134321.

It is an interprime number because it is at equal distance from previous prime (123431403243101) and next prime (123431403243103).

It is a super-2 number, since 2×123431403243102² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123431403243101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35591521693 + ... + 35591525160.

It is an arithmetic number, because the mean of its divisors is an integer number (10926597692089).

Almost surely, 2^{123431403243102} is an apocalyptic number.

123431403243102 is an abundant number, since it is smaller than the sum of its proper divisors (138806941367034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123431403243102 is a wasteful number, since it uses less digits than its factorization.

123431403243102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71183046892 (or 71183046875 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 123431403243102 its reverse (201342304134321), we get a palindrome (324773707377423).

The spelling of 123431403243102 in words is "one hundred twenty-three trillion, four hundred thirty-one billion, four hundred three million, two hundred forty-three thousand, one hundred two".