3138052321 has 4 divisors (see below), whose sum is σ = 3322643652. Its totient is φ = 2953460992.

The previous prime is 3138052319. The next prime is 3138052343. The reversal of 3138052321 is 1232508313.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2604673296 + 533379025 = 51036^2 + 23095^2 .

It is a cyclic number.

It is not a de Polignac number, because 3138052321 - 2¹ = 3138052319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3138052321.

It is not an unprimeable number, because it can be changed into a prime (3138052361) 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, 92295640 + ... + 92295673.

It is an arithmetic number, because the mean of its divisors is an integer number (830660913).

Almost surely, 2^3138052321 is an apocalyptic number.

It is an amenable number.

3138052321 is a deficient number, since it is larger than the sum of its proper divisors (184591331).

3138052321 is a wasteful number, since it uses less digits than its factorization.

3138052321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184591330.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 3138052321 is about 56018.3212975898. The cubic root of 3138052321 is about 1464.0415200745.

The spelling of 3138052321 in words is "three billion, one hundred thirty-eight million, fifty-two thousand, three hundred twenty-one".