3124320121 has 8 divisors (see below), whose sum is σ = 3381734664. Its totient is φ = 2869345920.

The previous prime is 3124320107. The next prime is 3124320167. The reversal of 3124320121 is 1210234213.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 648262521 + 2476057600 = 25461^2 + 49760^2 .

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 3124320121 - 2²⁷ = 2990102393 is a prime.

It is a super-2 number, since 2×3124320121² = 19522752436970909282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3124320181) 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, 607420 + ... + 612541.

It is an arithmetic number, because the mean of its divisors is an integer number (422716833).

Almost surely, 2^3124320121 is an apocalyptic number.

It is an amenable number.

3124320121 is a deficient number, since it is larger than the sum of its proper divisors (257414543).

3124320121 is a wasteful number, since it uses less digits than its factorization.

3124320121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1220171.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 3124320121 is about 55895.6180840681. The cubic root of 3124320121 is about 1461.9028359095.

Adding to 3124320121 its reverse (1210234213), we get a palindrome (4334554334).

The spelling of 3124320121 in words is "three billion, one hundred twenty-four million, three hundred twenty thousand, one hundred twenty-one".