3121613243025 has 48 divisors (see below), whose sum is σ = 5218955798784. Its totient is φ = 1646217492480.

The previous prime is 3121613243009. The next prime is 3121613243029. The reversal of 3121613243025 is 5203423161213.

It is not a de Polignac number, because 3121613243025 - 2⁴ = 3121613243009 is a prime.

It is a super-2 number, since 2×3121613243025² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3121613243029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7934104 + ... + 8318246.

It is an arithmetic number, because the mean of its divisors is an integer number (108728245808).

Almost surely, 2^{3121613243025} is an apocalyptic number.

It is an amenable number.

3121613243025 is a deficient number, since it is larger than the sum of its proper divisors (2097342555759).

3121613243025 is a wasteful number, since it uses less digits than its factorization.

3121613243025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385370 (or 385365 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The spelling of 3121613243025 in words is "three trillion, one hundred twenty-one billion, six hundred thirteen million, two hundred forty-three thousand, twenty-five".