1308481 has 4 divisors (see below), whose sum is σ = 1318912. Its totient is φ = 1298052.

The previous prime is 1308467. The next prime is 1308491. The reversal of 1308481 is 1848031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1308481 - 2⁷ = 1308353 is a prime.

It is a super-2 number, since 2×1308481² = 3424245054722, which contains 22 as substring.

It is a Duffinian number.

1308481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1308421) 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, 5025 + ... + 5278.

It is an arithmetic number, because the mean of its divisors is an integer number (329728).

2^1308481 is an apocalyptic number.

It is an amenable number.

1308481 is a deficient number, since it is larger than the sum of its proper divisors (10431).

1308481 is a wasteful number, since it uses less digits than its factorization.

1308481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10430.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1308481 is about 1143.8885435216. Note that the first 3 decimals coincide. The cubic root of 1308481 is about 109.3761100296.

The spelling of 1308481 in words is "one million, three hundred eight thousand, four hundred eighty-one".