1310999650109 has 8 divisors (see below), whose sum is σ = 1388127667320. Its totient is φ = 1233872787456.

The previous prime is 1310999650099. The next prime is 1310999650111. The reversal of 1310999650109 is 9010569990131.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8940648025 + 1302059002084 = 94555^2 + 1141078^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1310999650109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1310999650139) 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, 3385547 + ... + 3752855.

It is an arithmetic number, because the mean of its divisors is an integer number (173515958415).

Almost surely, 2^{1310999650109} is an apocalyptic number.

It is an amenable number.

1310999650109 is a deficient number, since it is larger than the sum of its proper divisors (77128017211).

1310999650109 is a wasteful number, since it uses less digits than its factorization.

1310999650109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577279.

The product of its (nonzero) digits is 590490, while the sum is 53.

The spelling of 1310999650109 in words is "one trillion, three hundred ten billion, nine hundred ninety-nine million, six hundred fifty thousand, one hundred nine".