1540311347 has 2 divisors, whose sum is σ = 1540311348. Its totient is φ = 1540311346.

The previous prime is 1540311319. The next prime is 1540311349. The reversal of 1540311347 is 7431130451.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1540311347 is a prime.

Together with 1540311349, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1540311349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770155673 + 770155674.

It is an arithmetic number, because the mean of its divisors is an integer number (770155674).

Almost surely, 2^1540311347 is an apocalyptic number.

1540311347 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540311347 is an equidigital number, since it uses as much as digits as its factorization.

1540311347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1540311347 is about 39246.8004683184. The cubic root of 1540311347 is about 1154.8781683429.

Adding to 1540311347 its reverse (7431130451), we get a palindrome (8971441798).

The spelling of 1540311347 in words is "one billion, five hundred forty million, three hundred eleven thousand, three hundred forty-seven".