31222321022132 has 24 divisors (see below), whose sum is σ = 55977556543272. Its totient is φ = 15231988137600.

The previous prime is 31222321022131. The next prime is 31222321022147. The reversal of 31222321022132 is 23122012322213.

It can be written as a sum of positive squares in 4 ways, for example, as 1269511479076 + 29952809543056 = 1126726^2 + 5472916^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31222321022131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406798919 + ... + 406875662.

It is an arithmetic number, because the mean of its divisors is an integer number (2332398189303).

Almost surely, 2^{31222321022132} is an apocalyptic number.

It is an amenable number.

31222321022132 is a deficient number, since it is larger than the sum of its proper divisors (24755235521140).

31222321022132 is a wasteful number, since it uses less digits than its factorization.

31222321022132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813674819 (or 813674817 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 31222321022132 its reverse (23122012322213), we get a palindrome (54344333344345).

The spelling of 31222321022132 in words is "thirty-one trillion, two hundred twenty-two billion, three hundred twenty-one million, twenty-two thousand, one hundred thirty-two".