2340215251 has 4 divisors (see below), whose sum is σ = 2552962104. Its totient is φ = 2127468400.

The previous prime is 2340215249. The next prime is 2340215263. The reversal of 2340215251 is 1525120432.

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 2340215251 - 2¹ = 2340215249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2340215221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106373410 + ... + 106373431.

It is an arithmetic number, because the mean of its divisors is an integer number (638240526).

Almost surely, 2^2340215251 is an apocalyptic number.

2340215251 is a deficient number, since it is larger than the sum of its proper divisors (212746853).

2340215251 is a wasteful number, since it uses less digits than its factorization.

2340215251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212746852.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2340215251 is about 48375.7713220161. The cubic root of 2340215251 is about 1327.6551010373.

Adding to 2340215251 its reverse (1525120432), we get a palindrome (3865335683).

The spelling of 2340215251 in words is "two billion, three hundred forty million, two hundred fifteen thousand, two hundred fifty-one".