1245706889431 has 2 divisors, whose sum is σ = 1245706889432. Its totient is φ = 1245706889430.

The previous prime is 1245706889411. The next prime is 1245706889521. The reversal of 1245706889431 is 1349886075421.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1245706889431 - 2⁷ = 1245706889303 is a prime.

It is a super-2 number, since 2×1245706889431² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245706889411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622853444715 + 622853444716.

It is an arithmetic number, because the mean of its divisors is an integer number (622853444716).

It is a 1-persistent number, because it is pandigital, but 2⋅1245706889431 = 2491413778862 is not.

Almost surely, 2^{1245706889431} is an apocalyptic number.

1245706889431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1245706889431 is an equidigital number, since it uses as much as digits as its factorization.

1245706889431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11612160, while the sum is 58.

The spelling of 1245706889431 in words is "one trillion, two hundred forty-five billion, seven hundred six million, eight hundred eighty-nine thousand, four hundred thirty-one".