1689133031 has 2 divisors, whose sum is σ = 1689133032. Its totient is φ = 1689133030.

The previous prime is 1689133021. The next prime is 1689133081. The reversal of 1689133031 is 1303319861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1689133031 - 2⁶ = 1689132967 is a prime.

It is a super-2 number, since 2×1689133031² = 5706340792830493922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1689132982 and 1689133000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1689133001) 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, 844566515 + 844566516.

It is an arithmetic number, because the mean of its divisors is an integer number (844566516).

Almost surely, 2^1689133031 is an apocalyptic number.

1689133031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1689133031 is an equidigital number, since it uses as much as digits as its factorization.

1689133031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 1689133031 is about 41099.0636268030. The cubic root of 1689133031 is about 1190.9347059207.

The spelling of 1689133031 in words is "one billion, six hundred eighty-nine million, one hundred thirty-three thousand, thirty-one".