2347138881 has 12 divisors (see below), whose sum is σ = 3589742052. Its totient is φ = 1472714496.

The previous prime is 2347138879. The next prime is 2347138889. The reversal of 2347138881 is 1888317432.

2347138881 is a `hidden beast` number, since 23 + 471 + 3 + 88 + 81 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1795640625 + 551498256 = 42375^2 + 23484^2 .

It is not a de Polignac number, because 2347138881 - 2¹ = 2347138879 is a prime.

It is a super-2 number, since 2×2347138881² = 11018121853403864322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2347138889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7670236 + ... + 7670541.

It is an arithmetic number, because the mean of its divisors is an integer number (299145171).

Almost surely, 2^2347138881 is an apocalyptic number.

It is an amenable number.

2347138881 is a deficient number, since it is larger than the sum of its proper divisors (1242603171).

2347138881 is a wasteful number, since it uses less digits than its factorization.

2347138881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15340800 (or 15340797 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 2347138881 is about 48447.2793972995. The cubic root of 2347138881 is about 1328.9631206571.

The spelling of 2347138881 in words is "two billion, three hundred forty-seven million, one hundred thirty-eight thousand, eight hundred eighty-one".