1340400333 has 4 divisors (see below), whose sum is σ = 1787200448. Its totient is φ = 893600220.

The previous prime is 1340400209. The next prime is 1340400337. The reversal of 1340400333 is 3330040431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1340400333 - 2¹⁷ = 1340269261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1340400337) 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, 223400053 + ... + 223400058.

It is an arithmetic number, because the mean of its divisors is an integer number (446800112).

Almost surely, 2^1340400333 is an apocalyptic number.

It is an amenable number.

1340400333 is a deficient number, since it is larger than the sum of its proper divisors (446800115).

1340400333 is an equidigital number, since it uses as much as digits as its factorization.

1340400333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446800114.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 1340400333 is about 36611.4781591784. The cubic root of 1340400333 is about 1102.5835507251.

Adding to 1340400333 its reverse (3330040431), we get a palindrome (4670440764).

The spelling of 1340400333 in words is "one billion, three hundred forty million, four hundred thousand, three hundred thirty-three".