2951321 has 4 divisors (see below), whose sum is σ = 2980644. Its totient is φ = 2922000.

The previous prime is 2951309. The next prime is 2951323. The reversal of 2951321 is 1231592.

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 1413721 + 1537600 = 1189^2 + 1240^2 .

It is a cyclic number.

It is not a de Polignac number, because 2951321 - 2¹⁴ = 2934937 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2951323) 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, 14510 + ... + 14711.

It is an arithmetic number, because the mean of its divisors is an integer number (745161).

2^2951321 is an apocalyptic number.

It is an amenable number.

2951321 is a deficient number, since it is larger than the sum of its proper divisors (29323).

2951321 is a wasteful number, since it uses less digits than its factorization.

2951321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29322.

The product of its digits is 540, while the sum is 23.

The square root of 2951321 is about 1717.9409186581. The cubic root of 2951321 is about 143.4406185531.

The spelling of 2951321 in words is "two million, nine hundred fifty-one thousand, three hundred twenty-one".