1309671 has 12 divisors (see below), whose sum is σ = 2063880. Its totient is φ = 793680.

The previous prime is 1309661. The next prime is 1309673. The reversal of 1309671 is 1769031.

It is not a de Polignac number, because 1309671 - 2⁵ = 1309639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1309673) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6516 + ... + 6713.

It is an arithmetic number, because the mean of its divisors is an integer number (171990).

2^1309671 is an apocalyptic number.

1309671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1309671 is a deficient number, since it is larger than the sum of its proper divisors (754209).

1309671 is a wasteful number, since it uses less digits than its factorization.

1309671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13246 (or 13243 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 1309671 is about 1144.4085808836. The cubic root of 1309671 is about 109.4092574052.

It can be divided in two parts, 130 and 9671, that added together give a square (9801 = 99²).

The spelling of 1309671 in words is "one million, three hundred nine thousand, six hundred seventy-one".