123331310031431 has 2 divisors, whose sum is σ = 123331310031432. Its totient is φ = 123331310031430.

The previous prime is 123331310031421. The next prime is 123331310031469. The reversal of 123331310031431 is 134130013133321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123331310031431 - 2¹⁰ = 123331310030407 is a prime.

It is a super-2 number, since 2×123331310031431² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 123331310031394 and 123331310031403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123331310031421) 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 as a sum of consecutive naturals, namely, 61665655015715 + 61665655015716.

It is an arithmetic number, because the mean of its divisors is an integer number (61665655015716).

Almost surely, 2^{123331310031431} is an apocalyptic number.

123331310031431 is a deficient number, since it is larger than the sum of its proper divisors (1).

123331310031431 is an equidigital number, since it uses as much as digits as its factorization.

123331310031431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 123331310031431 its reverse (134130013133321), we get a palindrome (257461323164752).

The spelling of 123331310031431 in words is "one hundred twenty-three trillion, three hundred thirty-one billion, three hundred ten million, thirty-one thousand, four hundred thirty-one".