31012300549 has 2 divisors, whose sum is σ = 31012300550. Its totient is φ = 31012300548.

The previous prime is 31012300531. The next prime is 31012300559. The reversal of 31012300549 is 94500321013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30370032900 + 642267649 = 174270^2 + 25343^2 .

It is a cyclic number.

It is not a de Polignac number, because 31012300549 - 2¹⁷ = 31012169477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31012300559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506150274 + 15506150275.

It is an arithmetic number, because the mean of its divisors is an integer number (15506150275).

Almost surely, 2^31012300549 is an apocalyptic number.

It is an amenable number.

31012300549 is a deficient number, since it is larger than the sum of its proper divisors (1).

31012300549 is an equidigital number, since it uses as much as digits as its factorization.

31012300549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The spelling of 31012300549 in words is "thirty-one billion, twelve million, three hundred thousand, five hundred forty-nine".