3121230404 has 12 divisors (see below), whose sum is σ = 5510491644. Its totient is φ = 1546804224.

The previous prime is 3121230397. The next prime is 3121230407. The reversal of 3121230404 is 4040321213.

It can be written as a sum of positive squares in 2 ways, for example, as 231952900 + 2889277504 = 15230^2 + 53752^2 .

It is not an unprimeable number, because it can be changed into a prime (3121230407) 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, 3452237 + ... + 3453140.

It is an arithmetic number, because the mean of its divisors is an integer number (459207637).

Almost surely, 2^3121230404 is an apocalyptic number.

It is an amenable number.

3121230404 is a deficient number, since it is larger than the sum of its proper divisors (2389261240).

3121230404 is a wasteful number, since it uses less digits than its factorization.

3121230404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6905494 (or 6905492 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 3121230404 is about 55867.9729719989. The cubic root of 3121230404 is about 1461.4207730783.

Adding to 3121230404 its reverse (4040321213), we get a palindrome (7161551617).

It can be divided in two parts, 31212 and 30404, that added together give a palindrome (61616).

The spelling of 3121230404 in words is "three billion, one hundred twenty-one million, two hundred thirty thousand, four hundred four".