13220031332 has 6 divisors (see below), whose sum is σ = 23135054838. Its totient is φ = 6610015664.

The previous prime is 13220031301. The next prime is 13220031371. The reversal of 13220031332 is 23313002231.

It can be written as a sum of positive squares in only one way, i.e., 9483643456 + 3736387876 = 97384^2 + 61126^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1652503913 + ... + 1652503920.

It is an arithmetic number, because the mean of its divisors is an integer number (3855842473).

Almost surely, 2^13220031332 is an apocalyptic number.

It is an amenable number.

13220031332 is a deficient number, since it is larger than the sum of its proper divisors (9915023506).

13220031332 is a wasteful number, since it uses less digits than its factorization.

13220031332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3305007837 (or 3305007835 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 13220031332 its reverse (23313002231), we get a palindrome (36533033563).

The spelling of 13220031332 in words is "thirteen billion, two hundred twenty million, thirty-one thousand, three hundred thirty-two".