3105121404 has 96 divisors (see below), whose sum is σ = 9059904000. Its totient is φ = 804130560.

The previous prime is 3105121403. The next prime is 3105121433. The reversal of 3105121404 is 4041215013.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3105121403) 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, 317662 + ... + 327290.

It is an arithmetic number, because the mean of its divisors is an integer number (94374000).

Almost surely, 2^3105121404 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3105121404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4529952000).

3105121404 is an abundant number, since it is smaller than the sum of its proper divisors (5954782596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3105121404 is a wasteful number, since it uses less digits than its factorization.

3105121404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10003 (or 10001 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 3105121404 is about 55723.6162143126. The cubic root of 3105121404 is about 1458.9022529571.

Adding to 3105121404 its reverse (4041215013), we get a palindrome (7146336417).

The spelling of 3105121404 in words is "three billion, one hundred five million, one hundred twenty-one thousand, four hundred four".