101986123 has 2 divisors, whose sum is σ = 101986124. Its totient is φ = 101986122.

The previous prime is 101986051. The next prime is 101986133. The reversal of 101986123 is 321689101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101986123 - 2¹⁷ = 101855051 is a prime.

It is a super-2 number, since 2×101986123² = 20802338569142258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (101986133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50993061 + 50993062.

It is an arithmetic number, because the mean of its divisors is an integer number (50993062).

Almost surely, 2^101986123 is an apocalyptic number.

101986123 is a deficient number, since it is larger than the sum of its proper divisors (1).

101986123 is an equidigital number, since it uses as much as digits as its factorization.

101986123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 101986123 is about 10098.8179011209. The cubic root of 101986123 is about 467.2116830165.

The spelling of 101986123 in words is "one hundred one million, nine hundred eighty-six thousand, one hundred twenty-three".