3124881861 has 8 divisors (see below), whose sum is σ = 4169328384. Its totient is φ = 2081844960.

The previous prime is 3124881847. The next prime is 3124881887. The reversal of 3124881861 is 1681884213.

3124881861 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3124881861 - 2⁹ = 3124881349 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3124885861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347221 + ... + 356106.

It is an arithmetic number, because the mean of its divisors is an integer number (521166048).

Almost surely, 2^3124881861 is an apocalyptic number.

It is an amenable number.

3124881861 is a deficient number, since it is larger than the sum of its proper divisors (1044446523).

3124881861 is a wasteful number, since it uses less digits than its factorization.

3124881861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704811.

The product of its digits is 73728, while the sum is 42.

The square root of 3124881861 is about 55900.6427601687. The cubic root of 3124881861 is about 1461.9904453792.

The spelling of 3124881861 in words is "three billion, one hundred twenty-four million, eight hundred eighty-one thousand, eight hundred sixty-one".