1347201561 has 16 divisors (see below), whose sum is σ = 1884075264. Its totient is φ = 855264384.

The previous prime is 1347201551. The next prime is 1347201589. The reversal of 1347201561 is 1651027431.

It is not a de Polignac number, because 1347201561 - 2⁹ = 1347201049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1347201551) 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, 123900 + ... + 134333.

It is an arithmetic number, because the mean of its divisors is an integer number (117754704).

Almost surely, 2^1347201561 is an apocalyptic number.

It is an amenable number.

1347201561 is a deficient number, since it is larger than the sum of its proper divisors (536873703).

1347201561 is a wasteful number, since it uses less digits than its factorization.

1347201561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258320.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1347201561 is about 36704.2444548311. The cubic root of 1347201561 is about 1104.4452518702.

Adding to 1347201561 its reverse (1651027431), we get a palindrome (2998228992).

The spelling of 1347201561 in words is "one billion, three hundred forty-seven million, two hundred one thousand, five hundred sixty-one".