2351281 has 2 divisors, whose sum is σ = 2351282. Its totient is φ = 2351280.

The previous prime is 2351263. The next prime is 2351303. The reversal of 2351281 is 1821532.

It is an a-pointer prime, because the next prime (2351303) can be obtained adding 2351281 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2117025 + 234256 = 1455^2 + 484^2 .

It is a cyclic number.

It is not a de Polignac number, because 2351281 - 2¹¹ = 2349233 is a prime.

It is a super-2 number, since 2×2351281² = 11057044681922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2351201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1175640 + 1175641.

It is an arithmetic number, because the mean of its divisors is an integer number (1175641).

2^2351281 is an apocalyptic number.

It is an amenable number.

2351281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2351281 is an equidigital number, since it uses as much as digits as its factorization.

2351281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 22.

The square root of 2351281 is about 1533.3887308833. The cubic root of 2351281 is about 132.9744424858.

The spelling of 2351281 in words is "two million, three hundred fifty-one thousand, two hundred eighty-one".