1345040347 has 6 divisors (see below), whose sum is σ = 1564638828. Its totient is φ = 1152891684.

The previous prime is 1345040339. The next prime is 1345040351. The reversal of 1345040347 is 7430405431.

It is not a de Polignac number, because 1345040347 - 2³ = 1345040339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1345040377) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13724853 + ... + 13724950.

It is an arithmetic number, because the mean of its divisors is an integer number (260773138).

Almost surely, 2^1345040347 is an apocalyptic number.

1345040347 is a deficient number, since it is larger than the sum of its proper divisors (219598481).

1345040347 is an equidigital number, since it uses as much as digits as its factorization.

1345040347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27449817 (or 27449810 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 1345040347 is about 36674.7917103833. The cubic root of 1345040347 is about 1103.8543429951.

Adding to 1345040347 its reverse (7430405431), we get a palindrome (8775445778).

The spelling of 1345040347 in words is "one billion, three hundred forty-five million, forty thousand, three hundred forty-seven".