3121130023213 has 8 divisors (see below), whose sum is σ = 3180101067000. Its totient is φ = 3062162009088.

The previous prime is 3121130023201. The next prime is 3121130023259. The reversal of 3121130023213 is 3123200311213.

It can be written as a sum of positive squares in 4 ways, for example, as 483877445769 + 2637252577444 = 695613^2 + 1623962^2 .

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 3121130023213 - 2⁹ = 3121130022701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121130923213) 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, 1378813 + ... + 2853661.

It is an arithmetic number, because the mean of its divisors is an integer number (397512633375).

Almost surely, 2^{3121130023213} is an apocalyptic number.

It is an amenable number.

3121130023213 is a deficient number, since it is larger than the sum of its proper divisors (58971043787).

3121130023213 is a wasteful number, since it uses less digits than its factorization.

3121130023213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514831.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 3121130023213 its reverse (3123200311213), we get a palindrome (6244330334426).

The spelling of 3121130023213 in words is "three trillion, one hundred twenty-one billion, one hundred thirty million, twenty-three thousand, two hundred thirteen".