13531201109 has 8 divisors (see below), whose sum is σ = 13796428728. Its totient is φ = 13267373760.

The previous prime is 13531201097. The next prime is 13531201111. The reversal of 13531201109 is 90110213531.

It can be written as a sum of positive squares in 4 ways, for example, as 3953642884 + 9577558225 = 62878^2 + 97865^2 .

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 13531201109 - 2⁸ = 13531200853 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 (13531203109) 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, 330542 + ... + 369215.

It is an arithmetic number, because the mean of its divisors is an integer number (1724553591).

Almost surely, 2^13531201109 is an apocalyptic number.

It is an amenable number.

13531201109 is a deficient number, since it is larger than the sum of its proper divisors (265227619).

13531201109 is an equidigital number, since it uses as much as digits as its factorization.

13531201109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700135.

The product of its (nonzero) digits is 810, while the sum is 26.

The spelling of 13531201109 in words is "thirteen billion, five hundred thirty-one million, two hundred one thousand, one hundred nine".