2347281 has 6 divisors (see below), whose sum is σ = 3390530. Its totient is φ = 1564848.

The previous prime is 2347277. The next prime is 2347283. The reversal of 2347281 is 1827432.

It can be written as a sum of positive squares in only one way, i.e., 2005056 + 342225 = 1416^2 + 585^2 .

It is not a de Polignac number, because 2347281 - 2² = 2347277 is a prime.

It is a super-2 number, since 2×2347281² = 11019456185922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2347283) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130396 + ... + 130413.

2^2347281 is an apocalyptic number.

It is an amenable number.

2347281 is a deficient number, since it is larger than the sum of its proper divisors (1043249).

2347281 is a wasteful number, since it uses less digits than its factorization.

2347281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260815 (or 260812 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 2347281 is about 1532.0838749886. The cubic root of 2347281 is about 132.8989942972.

It can be divided in two parts, 2347 and 281, that added together give a triangular number (2628 = T₇₂).

The spelling of 2347281 in words is "two million, three hundred forty-seven thousand, two hundred eighty-one".