2151342321 has 16 divisors (see below), whose sum is σ = 2930183424. Its totient is φ = 1403688464.

The previous prime is 2151342301. The next prime is 2151342341. The reversal of 2151342321 is 1232431512.

It is an interprime number because it is at equal distance from previous prime (2151342301) and next prime (2151342341).

It is a cyclic number.

It is not a de Polignac number, because 2151342321 - 2⁶ = 2151342257 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2151342291 and 2151342300.

It is not an unprimeable number, because it can be changed into a prime (2151342301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13731 + ... + 67016.

It is an arithmetic number, because the mean of its divisors is an integer number (183136464).

Almost surely, 2^2151342321 is an apocalyptic number.

It is an amenable number.

2151342321 is a deficient number, since it is larger than the sum of its proper divisors (778841103).

2151342321 is a wasteful number, since it uses less digits than its factorization.

2151342321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80940.

The product of its digits is 1440, while the sum is 24.

The square root of 2151342321 is about 46382.5648385253. The cubic root of 2151342321 is about 1290.9314269474.

Adding to 2151342321 its reverse (1232431512), we get a palindrome (3383773833).

The spelling of 2151342321 in words is "two billion, one hundred fifty-one million, three hundred forty-two thousand, three hundred twenty-one".