3125121013 has 8 divisors (see below), whose sum is σ = 3571910720. Its totient is φ = 2678417280.

The previous prime is 3125121001. The next prime is 3125121023. The reversal of 3125121013 is 3101215213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3125121013 - 2²⁹ = 2588250101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3125121023) 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 7 ways as a sum of consecutive naturals, for example, 110278 + ... + 135688.

It is an arithmetic number, because the mean of its divisors is an integer number (446488840).

Almost surely, 2^3125121013 is an apocalyptic number.

It is an amenable number.

3125121013 is a deficient number, since it is larger than the sum of its proper divisors (446789707).

3125121013 is a wasteful number, since it uses less digits than its factorization.

3125121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42987.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 3125121013 is about 55902.7818001931. The cubic root of 3125121013 is about 1462.0277405513.

Adding to 3125121013 its reverse (3101215213), we get a palindrome (6226336226).

The spelling of 3125121013 in words is "three billion, one hundred twenty-five million, one hundred twenty-one thousand, thirteen".