1308720361 has 16 divisors (see below), whose sum is σ = 1511576640. Its totient is φ = 1122863040.

The previous prime is 1308720353. The next prime is 1308720403. The reversal of 1308720361 is 1630278031.

It is not a de Polignac number, because 1308720361 - 2³ = 1308720353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1308720331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36895 + ... + 63076.

It is an arithmetic number, because the mean of its divisors is an integer number (94473540).

Almost surely, 2^1308720361 is an apocalyptic number.

It is an amenable number.

1308720361 is a deficient number, since it is larger than the sum of its proper divisors (202856279).

1308720361 is a wasteful number, since it uses less digits than its factorization.

1308720361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100056.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1308720361 is about 36176.2402828155. The cubic root of 1308720361 is about 1093.8277902942.

Adding to 1308720361 its reverse (1630278031), we get a palindrome (2938998392).

The spelling of 1308720361 in words is "one billion, three hundred eight million, seven hundred twenty thousand, three hundred sixty-one".