1297305361 has 16 divisors (see below), whose sum is σ = 1440979200. Its totient is φ = 1157990400.

The previous prime is 1297305319. The next prime is 1297305367. The reversal of 1297305361 is 1635037921.

It is a cyclic number.

It is not a de Polignac number, because 1297305361 - 2⁹ = 1297304849 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1297305361.

It is not an unprimeable number, because it can be changed into a prime (1297305367) 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, 481105 + ... + 483793.

It is an arithmetic number, because the mean of its divisors is an integer number (90061200).

Almost surely, 2^1297305361 is an apocalyptic number.

1297305361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1297305361 is a deficient number, since it is larger than the sum of its proper divisors (143673839).

1297305361 is a wasteful number, since it uses less digits than its factorization.

1297305361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3480.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 1297305361 is about 36018.1254509448. The cubic root of 1297305361 is about 1090.6382819990.

The spelling of 1297305361 in words is "one billion, two hundred ninety-seven million, three hundred five thousand, three hundred sixty-one".