2340345021 has 8 divisors (see below), whose sum is σ = 3566240064. Its totient is φ = 1337340000.

The previous prime is 2340345019. The next prime is 2340345061. The reversal of 2340345021 is 1205430432.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2340345021 - 2¹ = 2340345019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2340344982 and 2340345000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2340345011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55722480 + ... + 55722521.

It is an arithmetic number, because the mean of its divisors is an integer number (445780008).

Almost surely, 2^2340345021 is an apocalyptic number.

2340345021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2340345021 is a deficient number, since it is larger than the sum of its proper divisors (1225895043).

2340345021 is a wasteful number, since it uses less digits than its factorization.

2340345021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111445011.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 2340345021 is about 48377.1125740262. The cubic root of 2340345021 is about 1327.6796410332.

Adding to 2340345021 its reverse (1205430432), we get a palindrome (3545775453).

It can be divided in two parts, 2340 and 345021, that added together give a triangular number (347361 = T₈₃₃).

The spelling of 2340345021 in words is "two billion, three hundred forty million, three hundred forty-five thousand, twenty-one".