1313421109 has 32 divisors (see below), whose sum is σ = 1769564160. Its totient is φ = 941457600.

The previous prime is 1313421097. The next prime is 1313421169. The reversal of 1313421109 is 9011243131.

It is a cyclic number.

It is not a de Polignac number, because 1313421109 - 2⁹ = 1313420597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313421169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 309202 + ... + 313420.

It is an arithmetic number, because the mean of its divisors is an integer number (55298880).

Almost surely, 2^1313421109 is an apocalyptic number.

It is an amenable number.

1313421109 is a deficient number, since it is larger than the sum of its proper divisors (456143051).

1313421109 is a wasteful number, since it uses less digits than its factorization.

1313421109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4561.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1313421109 is about 36241.1521478002. The cubic root of 1313421109 is about 1095.1358529832.

It can be divided in two parts, 13134 and 21109, that added together give a palindrome (34243).

The spelling of 1313421109 in words is "one billion, three hundred thirteen million, four hundred twenty-one thousand, one hundred nine".