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31324 = 2241191

31324 has 12 divisors (see below), whose sum is σ = 56448. Its totient is φ = 15200.

The previous prime is 31321. The next prime is 31327. The reversal of 31324 is 42313.

31324 is nontrivially palindromic in base 9.

It is an interprime number because it is at equal distance from previous prime (31321) and next prime (31327).

It is an Ulam number.

It is a plaindrome in base 13.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 69 + ... + 259.

It is an arithmetic number, because the mean of its divisors is an integer number (4704).

231324 is an apocalyptic number.

It is an amenable number.

31324 is a deficient number, since it is larger than the sum of its proper divisors (25124).

31324 is a wasteful number, since it uses less digits than its factorization.

31324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 234 counting only the distinct ones).

The product of its digits is 72, while the sum is 13.

The square root of 31324 is about 176.9858751426. The cubic root of 31324 is about 31.5228690904.

Adding to 31324 its reverse (42313), we get a palindrome (73637).

It can be divided in two parts, 3132 and 4, that added together give a square (3136 = 562).

The spelling of 31324 in words is "thirty-one thousand, three hundred twenty-four".

Divisors: 1 2 4 41 82 164 191 382 764 7831 15662 31324