1305147217 has 8 divisors (see below), whose sum is σ = 1443301920. Its totient is φ = 1170243360.

The previous prime is 1305147211. The next prime is 1305147241. The reversal of 1305147217 is 7127415031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1305147217 - 2¹⁵ = 1305114449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1305147211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 811867 + ... + 813472.

It is an arithmetic number, because the mean of its divisors is an integer number (180412740).

Almost surely, 2^1305147217 is an apocalyptic number.

It is an amenable number.

1305147217 is a deficient number, since it is larger than the sum of its proper divisors (138154703).

1305147217 is a wasteful number, since it uses less digits than its factorization.

1305147217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625423.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 1305147217 is about 36126.8212966488. The cubic root of 1305147217 is about 1092.8314056548.

It can be divided in two parts, 130514 and 7217, that added together give a palindrome (137731).

The spelling of 1305147217 in words is "one billion, three hundred five million, one hundred forty-seven thousand, two hundred seventeen".