1303055681 has 2 divisors, whose sum is σ = 1303055682. Its totient is φ = 1303055680.

The previous prime is 1303055669. The next prime is 1303055713. The reversal of 1303055681 is 1865503031.

It is an a-pointer prime, because the next prime (1303055713) can be obtained adding 1303055681 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1208188081 + 94867600 = 34759^2 + 9740^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303055681 - 2¹⁸ = 1302793537 is a prime.

It is a super-2 number, since 2×1303055681² = 3395908215572747522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1303055981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651527840 + 651527841.

It is an arithmetic number, because the mean of its divisors is an integer number (651527841).

Almost surely, 2^1303055681 is an apocalyptic number.

It is an amenable number.

1303055681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303055681 is an equidigital number, since it uses as much as digits as its factorization.

1303055681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 1303055681 is about 36097.8625544505. The cubic root of 1303055681 is about 1092.2473289443.

The spelling of 1303055681 in words is "one billion, three hundred three million, fifty-five thousand, six hundred eighty-one".