123125312442431 has 12 divisors (see below), whose sum is σ = 133648778401992. Its totient is φ = 112759219924848.

The previous prime is 123125312442403. The next prime is 123125312442463. The reversal of 123125312442431 is 134244213521321.

It is not a de Polignac number, because 123125312442431 - 2¹⁰ = 123125312441407 is a prime.

It is a super-2 number, since 2×123125312442431² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123125312442401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 293397425 + ... + 293816778.

It is an arithmetic number, because the mean of its divisors is an integer number (11137398200166).

Almost surely, 2^{123125312442431} is an apocalyptic number.

123125312442431 is a deficient number, since it is larger than the sum of its proper divisors (10523465959561).

123125312442431 is an equidigital number, since it uses as much as digits as its factorization.

123125312442431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587214470 (or 587214343 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

Adding to 123125312442431 its reverse (134244213521321), we get a palindrome (257369525963752).

The spelling of 123125312442431 in words is "one hundred twenty-three trillion, one hundred twenty-five billion, three hundred twelve million, four hundred forty-two thousand, four hundred thirty-one".