1340237707 has 4 divisors (see below), whose sum is σ = 1340645560. Its totient is φ = 1339829856.

The previous prime is 1340237699. The next prime is 1340237719. The reversal of 1340237707 is 7077320431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7077320431 = 19 ⋅372490549.

It is a cyclic number.

It is not a de Polignac number, because 1340237707 - 2³ = 1340237699 is a prime.

It is a super-4 number, since 4×1340237707⁴ (a number of 38 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340237777) 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, 198957 + ... + 205582.

It is an arithmetic number, because the mean of its divisors is an integer number (335161390).

Almost surely, 2^1340237707 is an apocalyptic number.

1340237707 is a deficient number, since it is larger than the sum of its proper divisors (407853).

1340237707 is an equidigital number, since it uses as much as digits as its factorization.

1340237707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407852.

The product of its (nonzero) digits is 24696, while the sum is 34.

The square root of 1340237707 is about 36609.2571216625. The cubic root of 1340237707 is about 1102.5389580761.

The spelling of 1340237707 in words is "one billion, three hundred forty million, two hundred thirty-seven thousand, seven hundred seven".