3121402113 has 12 divisors (see below), whose sum is σ = 4773909348. Its totient is φ = 1958526720.

The previous prime is 3121402073. The next prime is 3121402127. The reversal of 3121402113 is 3112041213.

3121402113 is a `hidden beast` number, since 312 + 140 + 211 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2791325889 + 330076224 = 52833^2 + 18168^2 .

It is not a de Polignac number, because 3121402113 - 2⁶ = 3121402049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3121402313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10200508 + ... + 10200813.

It is an arithmetic number, because the mean of its divisors is an integer number (397825779).

Almost surely, 2^3121402113 is an apocalyptic number.

It is an amenable number.

3121402113 is a deficient number, since it is larger than the sum of its proper divisors (1652507235).

3121402113 is a wasteful number, since it uses less digits than its factorization.

3121402113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20401344 (or 20401341 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 3121402113 is about 55869.5096899910. The cubic root of 3121402113 is about 1461.4475717512.

Adding to 3121402113 its reverse (3112041213), we get a palindrome (6233443326).

The spelling of 3121402113 in words is "three billion, one hundred twenty-one million, four hundred two thousand, one hundred thirteen".