13531201011 has 8 divisors (see below), whose sum is σ = 20046223760. Its totient is φ = 9020800656.

The previous prime is 13531200997. The next prime is 13531201043. The reversal of 13531201011 is 11010213531.

13531201011 is a `hidden beast` number, since 13 + 531 + 20 + 101 + 1 = 666.

It is not a de Polignac number, because 13531201011 - 2²¹ = 13529103859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531201081) 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, 250577770 + ... + 250577823.

It is an arithmetic number, because the mean of its divisors is an integer number (2505777970).

Almost surely, 2^13531201011 is an apocalyptic number.

13531201011 is a deficient number, since it is larger than the sum of its proper divisors (6515022749).

13531201011 is an equidigital number, since it uses as much as digits as its factorization.

13531201011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501155602 (or 501155596 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

Adding to 13531201011 its reverse (11010213531), we get a palindrome (24541414542).

The spelling of 13531201011 in words is "thirteen billion, five hundred thirty-one million, two hundred one thousand, eleven".