3123123331 has 4 divisors (see below), whose sum is σ = 3129898464. Its totient is φ = 3116348200.

The previous prime is 3123123319. The next prime is 3123123337. The reversal of 3123123331 is 1333213213.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3123123331 - 2¹⁹ = 3122599043 is a prime.

It is a super-2 number, since 2×3123123331² = 19507798681273071122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3123123337) 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, 3386875 + ... + 3387796.

It is an arithmetic number, because the mean of its divisors is an integer number (782474616).

Almost surely, 2^3123123331 is an apocalyptic number.

3123123331 is a deficient number, since it is larger than the sum of its proper divisors (6775133).

3123123331 is an equidigital number, since it uses as much as digits as its factorization.

3123123331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6775132.

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

The square root of 3123123331 is about 55884.9114788598. The cubic root of 3123123331 is about 1461.7161484520.

Adding to 3123123331 its reverse (1333213213), we get a palindrome (4456336544).

The spelling of 3123123331 in words is "three billion, one hundred twenty-three million, one hundred twenty-three thousand, three hundred thirty-one".