3121331323 has 8 divisors (see below), whose sum is σ = 3453048576. Its totient is φ = 2797607400.

The previous prime is 3121331309. The next prime is 3121331329. The reversal of 3121331323 is 3231331213.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121331323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121331294 and 3121331303.

It is not an unprimeable number, because it can be changed into a prime (3121331329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1997511 + ... + 1999072.

It is an arithmetic number, because the mean of its divisors is an integer number (431631072).

Almost surely, 2^3121331323 is an apocalyptic number.

3121331323 is a deficient number, since it is larger than the sum of its proper divisors (331717253).

3121331323 is a wasteful number, since it uses less digits than its factorization.

3121331323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3996665.

The product of its digits is 972, while the sum is 22.

The square root of 3121331323 is about 55868.8761565865. The cubic root of 3121331323 is about 1461.4365236546.

Adding to 3121331323 its reverse (3231331213), we get a palindrome (6352662536).

The spelling of 3121331323 in words is "three billion, one hundred twenty-one million, three hundred thirty-one thousand, three hundred twenty-three".