31224052 has 6 divisors (see below), whose sum is σ = 54642098. Its totient is φ = 15612024.

The previous prime is 31224029. The next prime is 31224091. The reversal of 31224052 is 25042213.

It can be written as a sum of positive squares in only one way, i.e., 26584336 + 4639716 = 5156^2 + 2154^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3903003 + ... + 3903010.

Almost surely, 2^31224052 is an apocalyptic number.

It is an amenable number.

31224052 is a deficient number, since it is larger than the sum of its proper divisors (23418046).

31224052 is a wasteful number, since it uses less digits than its factorization.

31224052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7806017 (or 7806015 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 31224052 is about 5587.8486021008. The cubic root of 31224052 is about 314.8930585160.

Adding to 31224052 its reverse (25042213), we get a palindrome (56266265).

The spelling of 31224052 in words is "thirty-one million, two hundred twenty-four thousand, fifty-two".