31222052 has 12 divisors (see below), whose sum is σ = 54700380. Its totient is φ = 15593376.

The previous prime is 31222021. The next prime is 31222091. The reversal of 31222052 is 25022213.

It can be written as a sum of positive squares in 2 ways, for example, as 15413476 + 15808576 = 3926^2 + 3976^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31222052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74 + ... + 7902.

It is an arithmetic number, because the mean of its divisors is an integer number (4558365).

Almost surely, 2^31222052 is an apocalyptic number.

It is an amenable number.

31222052 is a deficient number, since it is larger than the sum of its proper divisors (23478328).

31222052 is a wasteful number, since it uses less digits than its factorization.

31222052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8830 (or 8828 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 31222052 is about 5587.6696394830. The cubic root of 31222052 is about 314.8863350713.

Adding to 31222052 its reverse (25022213), we get a palindrome (56244265).

The spelling of 31222052 in words is "thirty-one million, two hundred twenty-two thousand, fifty-two".