1340243233 has 16 divisors (see below), whose sum is σ = 1568056320. Its totient is φ = 1121778000.

The previous prime is 1340243231. The next prime is 1340243239. The reversal of 1340243233 is 3323420431.

It is not a de Polignac number, because 1340243233 - 2¹ = 1340243231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340243198 and 1340243207.

It is not an unprimeable number, because it can be changed into a prime (1340243231) 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, 51618 + ... + 73108.

It is an arithmetic number, because the mean of its divisors is an integer number (98003520).

Almost surely, 2^1340243233 is an apocalyptic number.

It is an amenable number.

1340243233 is a deficient number, since it is larger than the sum of its proper divisors (227813087).

1340243233 is a wasteful number, since it uses less digits than its factorization.

1340243233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21708.

The product of its (nonzero) digits is 5184, while the sum is 25.

The square root of 1340243233 is about 36609.3325942990. The cubic root of 1340243233 is about 1102.5404733849.

Adding to 1340243233 its reverse (3323420431), we get a palindrome (4663663664).

The spelling of 1340243233 in words is "one billion, three hundred forty million, two hundred forty-three thousand, two hundred thirty-three".