31220053 has 2 divisors, whose sum is σ = 31220054. Its totient is φ = 31220052.

The previous prime is 31220023. The next prime is 31220081. The reversal of 31220053 is 35002213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17247409 + 13972644 = 4153^2 + 3738^2 .

It is a cyclic number.

It is not a de Polignac number, because 31220053 - 2⁹ = 31219541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31220003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15610026 + 15610027.

It is an arithmetic number, because the mean of its divisors is an integer number (15610027).

Almost surely, 2^31220053 is an apocalyptic number.

It is an amenable number.

31220053 is a deficient number, since it is larger than the sum of its proper divisors (1).

31220053 is an equidigital number, since it uses as much as digits as its factorization.

31220053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 31220053 is about 5587.4907606188. The cubic root of 31220053 is about 314.8796147013.

Adding to 31220053 its reverse (35002213), we get a palindrome (66222266).

The spelling of 31220053 in words is "thirty-one million, two hundred twenty thousand, fifty-three".