1313109 has 24 divisors (see below), whose sum is σ = 2283840. Its totient is φ = 710208.

The previous prime is 1313087. The next prime is 1313141. The reversal of 1313109 is 9013131.

Added to its reverse (9013131) it gives a triangular number (10326240 = T₄₅₄₄).

It is not a de Polignac number, because 1313109 - 2⁸ = 1312853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1313091 and 1313100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 649 + ... + 1745.

It is an arithmetic number, because the mean of its divisors is an integer number (95160).

2^1313109 is an apocalyptic number.

1313109 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1313109 is a deficient number, since it is larger than the sum of its proper divisors (970731).

1313109 is a wasteful number, since it uses less digits than its factorization.

1313109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 18.

The square root of 1313109 is about 1145.9096823048. The cubic root of 1313109 is about 109.5049100194.

Adding to 1313109 its reverse (9013131), we get a triangular number (10326240 = T₄₅₄₄).

It can be divided in two parts, 131 and 3109, that added together give a triangular number (3240 = T₈₀).

The spelling of 1313109 in words is "one million, three hundred thirteen thousand, one hundred nine".