3121021323 has 24 divisors (see below), whose sum is σ = 5261787648. Its totient is φ = 1745493552.

The previous prime is 3121021303. The next prime is 3121021327. The reversal of 3121021323 is 3231201213.

3121021323 is a `hidden beast` number, since 312 + 10 + 21 + 323 = 666.

It is not a de Polignac number, because 3121021323 - 2⁵ = 3121021291 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3121021296 and 3121021305.

It is not an unprimeable number, because it can be changed into a prime (3121021327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 524061 + ... + 529982.

It is an arithmetic number, because the mean of its divisors is an integer number (219241152).

Almost surely, 2^3121021323 is an apocalyptic number.

3121021323 is a deficient number, since it is larger than the sum of its proper divisors (2140766325).

3121021323 is a wasteful number, since it uses less digits than its factorization.

3121021323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054103 (or 1054100 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 3121021323 is about 55866.1017344149. The cubic root of 3121021323 is about 1461.3881404196.

Adding to 3121021323 its reverse (3231201213), we get a palindrome (6352222536).

The spelling of 3121021323 in words is "three billion, one hundred twenty-one million, twenty-one thousand, three hundred twenty-three".