13031222232 has 64 divisors (see below), whose sum is σ = 37447361280. Its totient is φ = 3701676672.

The previous prime is 13031222231. The next prime is 13031222251. The reversal of 13031222232 is 23222213031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 13031222199 and 13031222208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031222231) 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, 195118 + ... + 253245.

It is an arithmetic number, because the mean of its divisors is an integer number (585115020).

Almost surely, 2^13031222232 is an apocalyptic number.

13031222232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13031222232 is an abundant number, since it is smaller than the sum of its proper divisors (24416139048).

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

13031222232 is a wasteful number, since it uses less digits than its factorization.

13031222232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448552 (or 448548 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13031222232 its reverse (23222213031), we get a palindrome (36253435263).

The spelling of 13031222232 in words is "thirteen billion, thirty-one million, two hundred twenty-two thousand, two hundred thirty-two".