3121304225 has 48 divisors (see below), whose sum is σ = 4244353344. Its totient is φ = 2263200000.

The previous prime is 3121304203. The next prime is 3121304243. The reversal of 3121304225 is 5224031213.

It is not a de Polignac number, because 3121304225 - 2²⁴ = 3104527009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3121304225.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6770495 + ... + 6770955.

It is an arithmetic number, because the mean of its divisors is an integer number (88424028).

Almost surely, 2^3121304225 is an apocalyptic number.

It is an amenable number.

3121304225 is a deficient number, since it is larger than the sum of its proper divisors (1123049119).

3121304225 is a wasteful number, since it uses less digits than its factorization.

3121304225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3121304225 is about 55868.6336417851. The cubic root of 3121304225 is about 1461.4322944634.

Adding to 3121304225 its reverse (5224031213), we get a palindrome (8345335438).

The spelling of 3121304225 in words is "three billion, one hundred twenty-one million, three hundred four thousand, two hundred twenty-five".