3123123021331 has 8 divisors (see below), whose sum is σ = 3157054983680. Its totient is φ = 3089337003648.

The previous prime is 3123123021329. The next prime is 3123123021349. The reversal of 3123123021331 is 1331203213213.

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 3123123021331 - 2¹ = 3123123021329 is a prime.

It is a super-2 number, since 2×3123123021331² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3123123021296 and 3123123021305.

It is not an unprimeable number, because it can be changed into a prime (3123123021301) 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, 36443136 + ... + 36528733.

It is an arithmetic number, because the mean of its divisors is an integer number (394631872960).

Almost surely, 2^{3123123021331} is an apocalyptic number.

3123123021331 is a deficient number, since it is larger than the sum of its proper divisors (33931962349).

3123123021331 is a wasteful number, since it uses less digits than its factorization.

3123123021331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72972333.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 3123123021331 its reverse (1331203213213), we get a palindrome (4454326234544).

The spelling of 3123123021331 in words is "three trillion, one hundred twenty-three billion, one hundred twenty-three million, twenty-one thousand, three hundred thirty-one".