1303281481 has 4 divisors (see below), whose sum is σ = 1304162964. Its totient is φ = 1302400000.

The previous prime is 1303281479. The next prime is 1303281491. The reversal of 1303281481 is 1841823031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 992817081 + 310464400 = 31509^2 + 17620^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303281481 - 2¹ = 1303281479 is a prime.

It is a super-2 number, since 2×1303281481² = 3397085237435106722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303281401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438520 + ... + 441481.

It is an arithmetic number, because the mean of its divisors is an integer number (326040741).

Almost surely, 2^1303281481 is an apocalyptic number.

It is an amenable number.

1303281481 is a deficient number, since it is larger than the sum of its proper divisors (881483).

1303281481 is an equidigital number, since it uses as much as digits as its factorization.

1303281481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881482.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 1303281481 is about 36100.9900279757. The cubic root of 1303281481 is about 1092.3104153256.

The spelling of 1303281481 in words is "one billion, three hundred three million, two hundred eighty-one thousand, four hundred eighty-one".