1308261 has 4 divisors (see below), whose sum is σ = 1744352. Its totient is φ = 872172.

The previous prime is 1308247. The next prime is 1308287. The reversal of 1308261 is 1628031.

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 not a de Polignac number, because 1308261 - 2¹¹ = 1306213 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1308221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218041 + ... + 218046.

It is an arithmetic number, because the mean of its divisors is an integer number (436088).

2^1308261 is an apocalyptic number.

It is an amenable number.

1308261 is a deficient number, since it is larger than the sum of its proper divisors (436091).

1308261 is an equidigital number, since it uses as much as digits as its factorization.

1308261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436090.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1308261 is about 1143.7923762642. The cubic root of 1308261 is about 109.3699797424.

The spelling of 1308261 in words is "one million, three hundred eight thousand, two hundred sixty-one".