1340214345 has 12 divisors (see below), whose sum is σ = 2323038276. Its totient is φ = 714780960.

The previous prime is 1340214331. The next prime is 1340214391. The reversal of 1340214345 is 5434120431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 910108224 + 430106121 = 30168^2 + 20739^2 .

It is not a de Polignac number, because 1340214345 - 2⁷ = 1340214217 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14891226 + ... + 14891315.

It is an arithmetic number, because the mean of its divisors is an integer number (193586523).

Almost surely, 2^1340214345 is an apocalyptic number.

1340214345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1340214345 is a deficient number, since it is larger than the sum of its proper divisors (982823931).

1340214345 is a wasteful number, since it uses less digits than its factorization.

1340214345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29782552 (or 29782549 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 1340214345 is about 36608.9380479686. The cubic root of 1340214345 is about 1102.5325518332.

Adding to 1340214345 its reverse (5434120431), we get a palindrome (6774334776).

The spelling of 1340214345 in words is "one billion, three hundred forty million, two hundred fourteen thousand, three hundred forty-five".