3121311310121 has 8 divisors (see below), whose sum is σ = 3132516024000. Its totient is φ = 3110107831632.

The previous prime is 3121311310097. The next prime is 3121311310151. The reversal of 3121311310121 is 1210131131213.

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 3121311310121 - 2¹⁰ = 3121311309097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121311310093 and 3121311310102.

It is not an unprimeable number, because it can be changed into a prime (3121311310151) 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, 4911380 + ... + 5510378.

It is an arithmetic number, because the mean of its divisors is an integer number (391564503000).

Almost surely, 2^{3121311310121} is an apocalyptic number.

It is an amenable number.

3121311310121 is a deficient number, since it is larger than the sum of its proper divisors (11204713879).

3121311310121 is a wasteful number, since it uses less digits than its factorization.

3121311310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617695.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 3121311310121 its reverse (1210131131213), we get a palindrome (4331442441334).

The spelling of 3121311310121 in words is "three trillion, one hundred twenty-one billion, three hundred eleven million, three hundred ten thousand, one hundred twenty-one".