13131222032 has 20 divisors (see below), whose sum is σ = 25627453116. Its totient is φ = 6517685760.

The previous prime is 13131222029. The next prime is 13131222047. The reversal of 13131222032 is 23022213131.

It can be written as a sum of positive squares in 2 ways, for example, as 5604618496 + 7526603536 = 74864^2 + 86756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13131221995 and 13131222013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2993069 + ... + 2997452.

Almost surely, 2^13131222032 is an apocalyptic number.

It is an amenable number.

13131222032 is a deficient number, since it is larger than the sum of its proper divisors (12496231084).

13131222032 is a wasteful number, since it uses less digits than its factorization.

13131222032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990666 (or 5990660 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13131222032 its reverse (23022213131), we get a palindrome (36153435163).

The spelling of 13131222032 in words is "thirteen billion, one hundred thirty-one million, two hundred twenty-two thousand, thirty-two".