3121100013 has 8 divisors (see below), whose sum is σ = 4200359328. Its totient is φ = 2061287024.

The previous prime is 3121099981. The next prime is 3121100041. The reversal of 3121100013 is 3100011213.

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

It is a cyclic number.

It is not a de Polignac number, because 3121100013 - 2⁵ = 3121099981 is a prime.

It is a super-2 number, since 2×3121100013² = 19482530582297200338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121100063) 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, 4861206 + ... + 4861847.

It is an arithmetic number, because the mean of its divisors is an integer number (525044916).

Almost surely, 2^3121100013 is an apocalyptic number.

It is an amenable number.

3121100013 is a deficient number, since it is larger than the sum of its proper divisors (1079259315).

3121100013 is a wasteful number, since it uses less digits than its factorization.

3121100013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9723163.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 3121100013 is about 55866.8060032073. The cubic root of 3121100013 is about 1461.4004222609.

Adding to 3121100013 its reverse (3100011213), we get a palindrome (6221111226).

The spelling of 3121100013 in words is "three billion, one hundred twenty-one million, one hundred thousand, thirteen".