31134224 has 20 divisors (see below), whose sum is σ = 65806800. Its totient is φ = 14151840.

The previous prime is 31134221. The next prime is 31134239. The reversal of 31134224 is 42243113.

It is a junction number, because it is equal to n+sod(n) for n = 31134196 and 31134205.

It is not an unprimeable number, because it can be changed into a prime (31134221) 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, 88274 + ... + 88625.

It is an arithmetic number, because the mean of its divisors is an integer number (3290340).

Almost surely, 2^31134224 is an apocalyptic number.

It is an amenable number.

31134224 is an abundant number, since it is smaller than the sum of its proper divisors (34672576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31134224 is a wasteful number, since it uses less digits than its factorization.

31134224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176918 (or 176912 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 31134224 is about 5579.8050145144. The cubic root of 31134224 is about 314.5907981251.

Adding to 31134224 its reverse (42243113), we get a palindrome (73377337).

Subtracting 31134224 from its reverse (42243113), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 3113 and 4224, that added together give a palindrome (7337).

The spelling of 31134224 in words is "thirty-one million, one hundred thirty-four thousand, two hundred twenty-four".