31322 has 4 divisors (see below), whose sum is σ = 46986. Its totient is φ = 15660.

The previous prime is 31321. The next prime is 31327. The reversal of 31322 is 22313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22313 = 53 ⋅421.

It can be written as a sum of positive squares in only one way, i.e., 17161 + 14161 = 131^2 + 119^2 .

It is a plaindrome in base 13.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 31322.

It is not an unprimeable number, because it can be changed into a prime (31321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7829 + ... + 7832.

2³¹³²² is an apocalyptic number.

31322 is a deficient number, since it is larger than the sum of its proper divisors (15664).

31322 is a wasteful number, since it uses less digits than its factorization.

31322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15663.

The product of its digits is 36, while the sum is 11.

The square root of 31322 is about 176.9802248840. The cubic root of 31322 is about 31.5221981770.

Adding to 31322 its reverse (22313), we get a palindrome (53635).

Subtracting from 31322 its reverse (22313), we obtain a palindrome (9009).

It can be divided in two parts, 313 and 22, that multiplied together give a palindrome (6886).

The spelling of 31322 in words is "thirty-one thousand, three hundred twenty-two".