31224030109 has 2 divisors, whose sum is σ = 31224030110. Its totient is φ = 31224030108.

The previous prime is 31224030083. The next prime is 31224030119. The reversal of 31224030109 is 90103042213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31143425625 + 80604484 = 176475^2 + 8978^2 .

It is a cyclic number.

It is not a de Polignac number, because 31224030109 - 2¹⁵ = 31223997341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31224030119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15612015054 + 15612015055.

It is an arithmetic number, because the mean of its divisors is an integer number (15612015055).

Almost surely, 2^31224030109 is an apocalyptic number.

It is an amenable number.

31224030109 is a deficient number, since it is larger than the sum of its proper divisors (1).

31224030109 is an equidigital number, since it uses as much as digits as its factorization.

31224030109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 31224030109 in words is "thirty-one billion, two hundred twenty-four million, thirty thousand, one hundred nine".