13531202530 has 48 divisors (see below), whose sum is σ = 26504442216. Its totient is φ = 4969809920.

The previous prime is 13531202467. The next prime is 13531202533. The reversal of 13531202530 is 3520213531.

It can be written as a sum of positive squares in 12 ways, for example, as 2681271961 + 10849930569 = 51781^2 + 104163^2 .

It is a super-3 number, since 3×13531202530³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13531202495 and 13531202504.

It is not an unprimeable number, because it can be changed into a prime (13531202533) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61392 + ... + 175588.

Almost surely, 2^13531202530 is an apocalyptic number.

13531202530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13531202530 is a deficient number, since it is larger than the sum of its proper divisors (12973239686).

13531202530 is a wasteful number, since it uses less digits than its factorization.

13531202530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114279 (or 114262 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The spelling of 13531202530 in words is "thirteen billion, five hundred thirty-one million, two hundred two thousand, five hundred thirty".