1688044031423 has 2 divisors, whose sum is σ = 1688044031424. Its totient is φ = 1688044031422.

The previous prime is 1688044031351. The next prime is 1688044031437. The reversal of 1688044031423 is 3241304408861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1688044031423 - 2¹⁶ = 1688043965887 is a prime.

It is a super-2 number, since 2×1688044031423² (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 (1688044031483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 844022015711 + 844022015712.

It is an arithmetic number, because the mean of its divisors is an integer number (844022015712).

Almost surely, 2^{1688044031423} is an apocalyptic number.

1688044031423 is a deficient number, since it is larger than the sum of its proper divisors (1).

1688044031423 is an equidigital number, since it uses as much as digits as its factorization.

1688044031423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 442368, while the sum is 44.

The spelling of 1688044031423 in words is "one trillion, six hundred eighty-eight billion, forty-four million, thirty-one thousand, four hundred twenty-three".