3123234021 has 16 divisors (see below), whose sum is σ = 4213684800. Its totient is φ = 2057566848.

The previous prime is 3123233987. The next prime is 3123234029. The reversal of 3123234021 is 1204323213.

It is a de Polignac number, because none of the positive numbers 2^k-3123234021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3123234029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119395 + ... + 143183.

It is an arithmetic number, because the mean of its divisors is an integer number (263355300).

Almost surely, 2^3123234021 is an apocalyptic number.

It is an amenable number.

3123234021 is a deficient number, since it is larger than the sum of its proper divisors (1090450779).

3123234021 is a wasteful number, since it uses less digits than its factorization.

3123234021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24308.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3123234021 is about 55885.9018089536. The cubic root of 3123234021 is about 1461.7334170036.

Adding to 3123234021 its reverse (1204323213), we get a palindrome (4327557234).

The spelling of 3123234021 in words is "three billion, one hundred twenty-three million, two hundred thirty-four thousand, twenty-one".