20123411 has 16 divisors (see below), whose sum is σ = 25567488. Its totient is φ = 15381600.

The previous prime is 20123401. The next prime is 20123417. The reversal of 20123411 is 11432102.

It is a cyclic number.

It is not a de Polignac number, because 20123411 - 2⁶ = 20123347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20123417) 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, 1616 + ... + 6546.

It is an arithmetic number, because the mean of its divisors is an integer number (1597968).

Almost surely, 2^20123411 is an apocalyptic number.

20123411 is a deficient number, since it is larger than the sum of its proper divisors (5444077).

20123411 is a wasteful number, since it uses less digits than its factorization.

20123411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5002.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 20123411 is about 4485.9125047196. The cubic root of 20123411 is about 271.9989321974.

Adding to 20123411 its reverse (11432102), we get a palindrome (31555513).

The spelling of 20123411 in words is "twenty million, one hundred twenty-three thousand, four hundred eleven".