13530344331 has 16 divisors (see below), whose sum is σ = 20650362368. Its totient is φ = 7719364800.

The previous prime is 13530344327. The next prime is 13530344357. The reversal of 13530344331 is 13344303531.

It is not a de Polignac number, because 13530344331 - 2² = 13530344327 is a prime.

It is a super-2 number, since 2×13530344331² (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 (13530344131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 497290 + ... + 523791.

It is an arithmetic number, because the mean of its divisors is an integer number (1290647648).

Almost surely, 2^13530344331 is an apocalyptic number.

13530344331 is a deficient number, since it is larger than the sum of its proper divisors (7120018037).

13530344331 is a wasteful number, since it uses less digits than its factorization.

13530344331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021722.

The product of its (nonzero) digits is 19440, while the sum is 30.

Adding to 13530344331 its reverse (13344303531), we get a palindrome (26874647862).

The spelling of 13530344331 in words is "thirteen billion, five hundred thirty million, three hundred forty-four thousand, three hundred thirty-one".