2157322334 has 8 divisors (see below), whose sum is σ = 3236725488. Its totient is φ = 1078413840.

The previous prime is 2157322313. The next prime is 2157322361. The reversal of 2157322334 is 4332237512.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2157322334.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112562 + ... + 130325.

It is an arithmetic number, because the mean of its divisors is an integer number (404590686).

Almost surely, 2^2157322334 is an apocalyptic number.

2157322334 is a deficient number, since it is larger than the sum of its proper divisors (1079403154).

2157322334 is a wasteful number, since it uses less digits than its factorization.

2157322334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247330.

The product of its digits is 30240, while the sum is 32.

The square root of 2157322334 is about 46446.9841216844. The cubic root of 2157322334 is about 1292.1264397627.

Adding to 2157322334 its reverse (4332237512), we get a palindrome (6489559846).

The spelling of 2157322334 in words is "two billion, one hundred fifty-seven million, three hundred twenty-two thousand, three hundred thirty-four".