1340430151 has 4 divisors (see below), whose sum is σ = 1340504704. Its totient is φ = 1340355600.

The previous prime is 1340430139. The next prime is 1340430167. The reversal of 1340430151 is 1510340431.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1510340431 = 12511 ⋅120721.

It is a cyclic number.

It is not a de Polignac number, because 1340430151 - 2⁹ = 1340429639 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 (1340430181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8131 + ... + 52411.

It is an arithmetic number, because the mean of its divisors is an integer number (335126176).

Almost surely, 2^1340430151 is an apocalyptic number.

1340430151 is a deficient number, since it is larger than the sum of its proper divisors (74553).

1340430151 is an equidigital number, since it uses as much as digits as its factorization.

1340430151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74552.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1340430151 is about 36611.8853789313. The cubic root of 1340430151 is about 1102.5917265394.

Adding to 1340430151 its reverse (1510340431), we get a palindrome (2850770582).

The spelling of 1340430151 in words is "one billion, three hundred forty million, four hundred thirty thousand, one hundred fifty-one".