1303081 has 4 divisors (see below), whose sum is σ = 1403332. Its totient is φ = 1202832.

The previous prime is 1303073. The next prime is 1303091. The reversal of 1303081 is 1803031.

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 147456 + 1155625 = 384^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303081 - 2³ = 1303073 is a prime.

It is a super-2 number, since 2×1303081² = 3396040185122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50106 + ... + 50131.

It is an arithmetic number, because the mean of its divisors is an integer number (350833).

2^1303081 is an apocalyptic number.

It is an amenable number.

1303081 is a deficient number, since it is larger than the sum of its proper divisors (100251).

1303081 is a wasteful number, since it uses less digits than its factorization.

1303081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100250.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1303081 is about 1141.5257333937. The cubic root of 1303081 is about 109.2254403196.

The spelling of 1303081 in words is "one million, three hundred three thousand, eighty-one".