123102143431 has 4 divisors (see below), whose sum is σ = 123103402864. Its totient is φ = 123100884000.

The previous prime is 123102143429. The next prime is 123102143441. The reversal of 123102143431 is 134341201321.

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 123102143431 - 2¹ = 123102143429 is a prime.

It is a super-2 number, since 2×123102143431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123102143396 and 123102143405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123102143441) 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, 469515 + ... + 683116.

It is an arithmetic number, because the mean of its divisors is an integer number (30775850716).

Almost surely, 2^123102143431 is an apocalyptic number.

123102143431 is a deficient number, since it is larger than the sum of its proper divisors (1259433).

123102143431 is a wasteful number, since it uses less digits than its factorization.

123102143431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259432.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 123102143431 its reverse (134341201321), we get a palindrome (257443344752).

The spelling of 123102143431 in words is "one hundred twenty-three billion, one hundred two million, one hundred forty-three thousand, four hundred thirty-one".