13531523331 has 8 divisors (see below), whose sum is σ = 18042662224. Its totient is φ = 9020700000.

The previous prime is 13531523329. The next prime is 13531523347. The reversal of 13531523331 is 13332513531.

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

It is not a de Polignac number, because 13531523331 - 2¹ = 13531523329 is a prime.

It is a super-2 number, since 2×13531523331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13531523381) 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, 52365 + ... + 172641.

It is an arithmetic number, because the mean of its divisors is an integer number (2255332778).

Almost surely, 2^13531523331 is an apocalyptic number.

13531523331 is a deficient number, since it is larger than the sum of its proper divisors (4511138893).

13531523331 is a wasteful number, since it uses less digits than its factorization.

13531523331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157781.

The product of its digits is 12150, while the sum is 30.

The spelling of 13531523331 in words is "thirteen billion, five hundred thirty-one million, five hundred twenty-three thousand, three hundred thirty-one".