3123011120321 has 4 divisors (see below), whose sum is σ = 3140458110000. Its totient is φ = 3105564130644.

The previous prime is 3123011120287. The next prime is 3123011120351. The reversal of 3123011120321 is 1230211103213.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3123011120321 - 2¹⁴ = 3123011103937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3123011120293 and 3123011120302.

It is not an unprimeable number, because it can be changed into a prime (3123011120351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8723494571 + ... + 8723494928.

It is an arithmetic number, because the mean of its divisors is an integer number (785114527500).

Almost surely, 2^{3123011120321} is an apocalyptic number.

It is an amenable number.

3123011120321 is a deficient number, since it is larger than the sum of its proper divisors (17446989679).

3123011120321 is a wasteful number, since it uses less digits than its factorization.

3123011120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17446989678.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 3123011120321 its reverse (1230211103213), we get a palindrome (4353222223534).

The spelling of 3123011120321 in words is "three trillion, one hundred twenty-three billion, eleven million, one hundred twenty thousand, three hundred twenty-one".