3420321251 has 4 divisors (see below), whose sum is σ = 3433630152. Its totient is φ = 3407012352.

The previous prime is 3420321227. The next prime is 3420321293. The reversal of 3420321251 is 1521230243.

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

It is a cyclic number.

It is not a de Polignac number, because 3420321251 - 2¹⁰ = 3420320227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3420321211) 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, 6654065 + ... + 6654578.

It is an arithmetic number, because the mean of its divisors is an integer number (858407538).

Almost surely, 2^3420321251 is an apocalyptic number.

3420321251 is a deficient number, since it is larger than the sum of its proper divisors (13308901).

3420321251 is a wasteful number, since it uses less digits than its factorization.

3420321251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13308900.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 3420321251 is about 58483.5126424533. The cubic root of 3420321251 is about 1506.6844274464.

Adding to 3420321251 its reverse (1521230243), we get a palindrome (4941551494).

The spelling of 3420321251 in words is "three billion, four hundred twenty million, three hundred twenty-one thousand, two hundred fifty-one".