13530311331 has 8 divisors (see below), whose sum is σ = 18989910720. Its totient is φ = 8545459752.

The previous prime is 13530311309. The next prime is 13530311351. The reversal of 13530311331 is 13311303531.

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

It is not a de Polignac number, because 13530311331 - 2¹⁰ = 13530310307 is a prime.

It is a super-2 number, since 2×13530311331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13530311351) 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, 118686885 + ... + 118686998.

It is an arithmetic number, because the mean of its divisors is an integer number (2373738840).

Almost surely, 2^13530311331 is an apocalyptic number.

13530311331 is a deficient number, since it is larger than the sum of its proper divisors (5459599389).

13530311331 is a wasteful number, since it uses less digits than its factorization.

13530311331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237373905.

The product of its (nonzero) digits is 1215, while the sum is 24.

Adding to 13530311331 its reverse (13311303531), we get a palindrome (26841614862).

The spelling of 13530311331 in words is "thirteen billion, five hundred thirty million, three hundred eleven thousand, three hundred thirty-one".