1340013223 has 4 divisors (see below), whose sum is σ = 1383239488. Its totient is φ = 1296786960.

The previous prime is 1340013221. The next prime is 1340013239. The reversal of 1340013223 is 3223100431.

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 1340013223 - 2¹ = 1340013221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1340013223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340013221) 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, 21613086 + ... + 21613147.

It is an arithmetic number, because the mean of its divisors is an integer number (345809872).

Almost surely, 2^1340013223 is an apocalyptic number.

1340013223 is a deficient number, since it is larger than the sum of its proper divisors (43226265).

1340013223 is an equidigital number, since it uses as much as digits as its factorization.

1340013223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43226264.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1340013223 is about 36606.1910474171. The cubic root of 1340013223 is about 1102.4773978086.

Adding to 1340013223 its reverse (3223100431), we get a palindrome (4563113654).

The spelling of 1340013223 in words is "one billion, three hundred forty million, thirteen thousand, two hundred twenty-three".