201023123404 has 96 divisors (see below), whose sum is σ = 394356695040. Its totient is φ = 89217331200.

The previous prime is 201023123401. The next prime is 201023123417. The reversal of 201023123404 is 404321320102.

It is a super-2 number, since 2×201023123404² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201023123401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23873107 + ... + 23881525.

It is an arithmetic number, because the mean of its divisors is an integer number (4107882240).

Almost surely, 2^201023123404 is an apocalyptic number.

It is an amenable number.

201023123404 is a deficient number, since it is larger than the sum of its proper divisors (193333571636).

201023123404 is a wasteful number, since it uses less digits than its factorization.

201023123404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8759 (or 8757 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 201023123404 its reverse (404321320102), we get a palindrome (605344443506).

The spelling of 201023123404 in words is "two hundred one billion, twenty-three million, one hundred twenty-three thousand, four hundred four".