13513231530 has 24 divisors (see below), whose sum is σ = 35134402212. Its totient is φ = 3603528384.

The previous prime is 13513231519. The next prime is 13513231531. The reversal of 13513231530 is 3513231531.

13513231530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 13201320609 + 311910921 = 114897^2 + 17661^2 .

It is a super-2 number, since 2×13513231530² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13513231494 and 13513231503.

It is not an unprimeable number, because it can be changed into a prime (13513231531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75073419 + ... + 75073598.

Almost surely, 2^13513231530 is an apocalyptic number.

13513231530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13513231530 is an abundant number, since it is smaller than the sum of its proper divisors (21621170682).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13513231530 is a wasteful number, since it uses less digits than its factorization.

13513231530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150147030 (or 150147027 counting only the distinct ones).

The product of its (nonzero) digits is 4050, while the sum is 27.

Subtracting from 13513231530 its reverse (3513231531), we obtain a palindrome (9999999999).

The spelling of 13513231530 in words is "thirteen billion, five hundred thirteen million, two hundred thirty-one thousand, five hundred thirty".