3121304025 has 48 divisors (see below), whose sum is σ = 5905872000. Its totient is φ = 1424924160.

The previous prime is 3121303993. The next prime is 3121304027. The reversal of 3121304025 is 5204031213.

3121304025 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3121304025 - 2⁵ = 3121303993 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3121303992 and 3121304010.

It is not an unprimeable number, because it can be changed into a prime (3121304027) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 421051 + ... + 428399.

It is an arithmetic number, because the mean of its divisors is an integer number (123039000).

Almost surely, 2^3121304025 is an apocalyptic number.

3121304025 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3121304025 is a deficient number, since it is larger than the sum of its proper divisors (2784567975).

3121304025 is a wasteful number, since it uses less digits than its factorization.

3121304025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8178 (or 8173 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 3121304025 is about 55868.6318518719. The cubic root of 3121304025 is about 1461.4322632492.

Adding to 3121304025 its reverse (5204031213), we get a palindrome (8325335238).

The spelling of 3121304025 in words is "three billion, one hundred twenty-one million, three hundred four thousand, twenty-five".