3216139373 has 8 divisors (see below), whose sum is σ = 3425011128. Its totient is φ = 3009455104.

The previous prime is 3216139369. The next prime is 3216139379. The reversal of 3216139373 is 3739316123.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1418124964 + 1798014409 = 37658^2 + 42403^2 .

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 3216139373 - 2² = 3216139369 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3216139379) 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, 543836 + ... + 549717.

It is an arithmetic number, because the mean of its divisors is an integer number (428126391).

Almost surely, 2^3216139373 is an apocalyptic number.

It is an amenable number.

3216139373 is a deficient number, since it is larger than the sum of its proper divisors (208871755).

3216139373 is a wasteful number, since it uses less digits than its factorization.

3216139373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093743.

The product of its digits is 61236, while the sum is 38.

The square root of 3216139373 is about 56711.0163283995. The cubic root of 3216139373 is about 1476.0858610327.

The spelling of 3216139373 in words is "three billion, two hundred sixteen million, one hundred thirty-nine thousand, three hundred seventy-three".