1340533433 has 4 divisors (see below), whose sum is σ = 1340735460. Its totient is φ = 1340331408.

The previous prime is 1340533427. The next prime is 1340533457. The reversal of 1340533433 is 3343350431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 671431744 + 669101689 = 25912^2 + 25867^2 .

It is a cyclic number.

It is not a de Polignac number, because 1340533433 - 2²² = 1336339129 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1340533396 and 1340533405.

It is not an unprimeable number, because it can be changed into a prime (1340533333) 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, 90710 + ... + 104447.

It is an arithmetic number, because the mean of its divisors is an integer number (335183865).

Almost surely, 2^1340533433 is an apocalyptic number.

It is an amenable number.

1340533433 is a deficient number, since it is larger than the sum of its proper divisors (202027).

1340533433 is an equidigital number, since it uses as much as digits as its factorization.

1340533433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202026.

The product of its (nonzero) digits is 19440, while the sum is 29.

The square root of 1340533433 is about 36613.2958500051. The cubic root of 1340533433 is about 1102.6200445521.

Adding to 1340533433 its reverse (3343350431), we get a palindrome (4683883864).

The spelling of 1340533433 in words is "one billion, three hundred forty million, five hundred thirty-three thousand, four hundred thirty-three".