16700731 has 2 divisors, whose sum is σ = 16700732. Its totient is φ = 16700730.

The previous prime is 16700713. The next prime is 16700743. The reversal of 16700731 is 13700761.

Together with previous prime (16700713) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (13700761) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16700731 - 2¹¹ = 16698683 is a prime.

It is a super-2 number, since 2×16700731² = 557828831868722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16700696 and 16700705.

It is not a weakly prime, because it can be changed into another prime (16700771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8350365 + 8350366.

It is an arithmetic number, because the mean of its divisors is an integer number (8350366).

Almost surely, 2^16700731 is an apocalyptic number.

16700731 is a deficient number, since it is larger than the sum of its proper divisors (1).

16700731 is an equidigital number, since it uses as much as digits as its factorization.

16700731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 882, while the sum is 25.

The square root of 16700731 is about 4086.6527868171. The cubic root of 16700731 is about 255.6103845040.

The spelling of 16700731 in words is "sixteen million, seven hundred thousand, seven hundred thirty-one".