2240343021 has 16 divisors (see below), whose sum is σ = 3414690944. Its totient is φ = 1279882944.

The previous prime is 2240342983. The next prime is 2240343047. The reversal of 2240343021 is 1203430422.

It is not a de Polignac number, because 2240343021 - 2¹⁷ = 2240211949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2240343071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96111 + ... + 117123.

It is an arithmetic number, because the mean of its divisors is an integer number (213418184).

Almost surely, 2^2240343021 is an apocalyptic number.

2240343021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2240343021 is a deficient number, since it is larger than the sum of its proper divisors (1174347923).

2240343021 is a wasteful number, since it uses less digits than its factorization.

2240343021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26100.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2240343021 is about 47332.2619467948. The cubic root of 2240343021 is about 1308.4933090259.

Adding to 2240343021 its reverse (1203430422), we get a palindrome (3443773443).

The spelling of 2240343021 in words is "two billion, two hundred forty million, three hundred forty-three thousand, twenty-one".