1308161 has 8 divisors (see below), whose sum is σ = 1372800. Its totient is φ = 1244880.

The previous prime is 1308157. The next prime is 1308173. The reversal of 1308161 is 1618031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1308161 - 2² = 1308157 is a prime.

It is a super-2 number, since 2×1308161² = 3422570403842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1308121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2006 + ... + 2576.

It is an arithmetic number, because the mean of its divisors is an integer number (171600).

2^1308161 is an apocalyptic number.

1308161 is the 512-nd centered decagonal number.

It is an amenable number.

1308161 is a deficient number, since it is larger than the sum of its proper divisors (64639).

1308161 is an equidigital number, since it uses as much as digits as its factorization.

1308161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1308161 is about 1143.7486612014. The cubic root of 1308161 is about 109.3671930210.

The spelling of 1308161 in words is "one million, three hundred eight thousand, one hundred sixty-one".