1327611281 has 2 divisors, whose sum is σ = 1327611282. Its totient is φ = 1327611280.

The previous prime is 1327611269. The next prime is 1327611287. The reversal of 1327611281 is 1821167231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1250329600 + 77281681 = 35360^2 + 8791^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1327611281 is a prime.

It is a super-2 number, since 2×1327611281² = 3525103426876921922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1327611287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663805640 + 663805641.

It is an arithmetic number, because the mean of its divisors is an integer number (663805641).

Almost surely, 2^1327611281 is an apocalyptic number.

It is an amenable number.

1327611281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1327611281 is an equidigital number, since it uses as much as digits as its factorization.

1327611281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 32.

The square root of 1327611281 is about 36436.4004945604. The cubic root of 1327611281 is about 1099.0656752172.

The spelling of 1327611281 in words is "one billion, three hundred twenty-seven million, six hundred eleven thousand, two hundred eighty-one".