31124 has 12 divisors (see below), whose sum is σ = 56448. Its totient is φ = 15000.

The previous prime is 31123. The next prime is 31139. The reversal of 31124 is 42113.

It is a happy number.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31121) 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, 2 + ... + 249.

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

2³¹¹²⁴ is an apocalyptic number.

It is an amenable number.

31124 is a deficient number, since it is larger than the sum of its proper divisors (25324).

31124 is a wasteful number, since it uses less digits than its factorization.

31124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286 (or 284 counting only the distinct ones).

The product of its digits is 24, while the sum is 11.

The square root of 31124 is about 176.4199535200. The cubic root of 31124 is about 31.4556358763.

Subtracting from 31124 its sum of digits (11), we obtain a palindrome (31113).

Adding to 31124 its reverse (42113), we get a palindrome (73237).

It can be divided in two parts, 31 and 124, that multiplied together give a square (3844 = 62²).

The spelling of 31124 in words is "thirty-one thousand, one hundred twenty-four".