31322132 has 12 divisors (see below), whose sum is σ = 55028820. Its totient is φ = 15599616.

The previous prime is 31322129. The next prime is 31322149. The reversal of 31322132 is 23122313.

It can be written as a sum of positive squares in 2 ways, for example, as 25542916 + 5779216 = 5054^2 + 2404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31322132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14207 + ... + 16262.

It is an arithmetic number, because the mean of its divisors is an integer number (4585735).

Almost surely, 2^31322132 is an apocalyptic number.

It is an amenable number.

31322132 is a deficient number, since it is larger than the sum of its proper divisors (23706688).

31322132 is a wasteful number, since it uses less digits than its factorization.

31322132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30730 (or 30728 counting only the distinct ones).

The product of its digits is 216, while the sum is 17.

The square root of 31322132 is about 5596.6179072722. The cubic root of 31322132 is about 315.2224245815. Note that the first 3 decimals are identical.

Adding to 31322132 its reverse (23122313), we get a palindrome (54444445).

The spelling of 31322132 in words is "thirty-one million, three hundred twenty-two thousand, one hundred thirty-two".