31223224322 has 4 divisors (see below), whose sum is σ = 46834836486. Its totient is φ = 15611612160.

The previous prime is 31223224321. The next prime is 31223224327. The reversal of 31223224322 is 22342232213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 30859597561 + 363626761 = 175669^2 + 19069^2 .

It is a junction number, because it is equal to n+sod(n) for n = 31223224291 and 31223224300.

It is not an unprimeable number, because it can be changed into a prime (31223224321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7805806079 + ... + 7805806082.

Almost surely, 2^31223224322 is an apocalyptic number.

31223224322 is a deficient number, since it is larger than the sum of its proper divisors (15611612164).

31223224322 is a wasteful number, since it uses less digits than its factorization.

31223224322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15611612163.

The product of its digits is 6912, while the sum is 26.

Adding to 31223224322 its reverse (22342232213), we get a palindrome (53565456535).

The spelling of 31223224322 in words is "thirty-one billion, two hundred twenty-three million, two hundred twenty-four thousand, three hundred twenty-two".