20123983 has 16 divisors (see below), whose sum is σ = 23443200. Its totient is φ = 17081280.

The previous prime is 20123959. The next prime is 20124007. The reversal of 20123983 is 38932102.

It is an interprime number because it is at equal distance from previous prime (20123959) and next prime (20124007).

It is a cyclic number.

It is not a de Polignac number, because 20123983 - 2²¹ = 18026831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14598 + ... + 15916.

It is an arithmetic number, because the mean of its divisors is an integer number (1465200).

Almost surely, 2^20123983 is an apocalyptic number.

20123983 is a deficient number, since it is larger than the sum of its proper divisors (3319217).

20123983 is a wasteful number, since it uses less digits than its factorization.

20123983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 20123983 is about 4485.9762594111. The cubic root of 20123983 is about 272.0015093270.

It can be divided in two parts, 2012 and 3983, that added together give a palindrome (5995).

The spelling of 20123983 in words is "twenty million, one hundred twenty-three thousand, nine hundred eighty-three".