101984123 has 4 divisors (see below), whose sum is σ = 102189000. Its totient is φ = 101779248.

The previous prime is 101984119. The next prime is 101984143. The reversal of 101984123 is 321489101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101984123 - 2² = 101984119 is a prime.

It is a super-2 number, since 2×101984123² = 20801522688158258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101984143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101690 + ... + 102687.

It is an arithmetic number, because the mean of its divisors is an integer number (25547250).

Almost surely, 2^101984123 is an apocalyptic number.

101984123 is a deficient number, since it is larger than the sum of its proper divisors (204877).

101984123 is an equidigital number, since it uses as much as digits as its factorization.

101984123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204876.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 101984123 is about 10098.7188791450. The cubic root of 101984123 is about 467.2086289099.

The spelling of 101984123 in words is "one hundred one million, nine hundred eighty-four thousand, one hundred twenty-three".