13123433431 has 2 divisors, whose sum is σ = 13123433432. Its totient is φ = 13123433430.

The previous prime is 13123433429. The next prime is 13123433459. The reversal of 13123433431 is 13433432131.

It is an a-pointer prime, because the next prime (13123433459) can be obtained adding 13123433431 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13123433431 - 2¹ = 13123433429 is a prime.

It is a super-2 number, since 2×13123433431² (a number of 21 digits) contains 22 as substring.

Together with 13123433429, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 13123433431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13123433131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6561716715 + 6561716716.

It is an arithmetic number, because the mean of its divisors is an integer number (6561716716).

Almost surely, 2^13123433431 is an apocalyptic number.

13123433431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13123433431 is an equidigital number, since it uses as much as digits as its factorization.

13123433431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 28.

Adding to 13123433431 its reverse (13433432131), we get a palindrome (26556865562).

The spelling of 13123433431 in words is "thirteen billion, one hundred twenty-three million, four hundred thirty-three thousand, four hundred thirty-one".