2340430261 has 4 divisors (see below), whose sum is σ = 2520463372. Its totient is φ = 2160397152.

The previous prime is 2340430247. The next prime is 2340430291. The reversal of 2340430261 is 1620340432.

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 1333637361 + 1006792900 = 36519^2 + 31730^2 .

It is a cyclic number.

It is not a de Polignac number, because 2340430261 - 2²³ = 2332041653 is a prime.

It is a super-3 number, since 3×2340430261³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2340430201) 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, 90016536 + ... + 90016561.

It is an arithmetic number, because the mean of its divisors is an integer number (630115843).

Almost surely, 2^2340430261 is an apocalyptic number.

It is an amenable number.

2340430261 is a deficient number, since it is larger than the sum of its proper divisors (180033111).

2340430261 is a wasteful number, since it uses less digits than its factorization.

2340430261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180033110.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 2340430261 is about 48377.9935611224. The cubic root of 2340430261 is about 1327.6957597447.

Adding to 2340430261 its reverse (1620340432), we get a palindrome (3960770693).

The spelling of 2340430261 in words is "two billion, three hundred forty million, four hundred thirty thousand, two hundred sixty-one".