31031310049 has 2 divisors, whose sum is σ = 31031310050. Its totient is φ = 31031310048.

The previous prime is 31031310007. The next prime is 31031310059. The reversal of 31031310049 is 94001313013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30436291600 + 595018449 = 174460^2 + 24393^2 .

It is a cyclic number.

It is not a de Polignac number, because 31031310049 - 2⁹ = 31031309537 is a prime.

It is not a weakly prime, because it can be changed into another prime (31031310059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15515655024 + 15515655025.

It is an arithmetic number, because the mean of its divisors is an integer number (15515655025).

Almost surely, 2^31031310049 is an apocalyptic number.

It is an amenable number.

31031310049 is a deficient number, since it is larger than the sum of its proper divisors (1).

31031310049 is an equidigital number, since it uses as much as digits as its factorization.

31031310049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 31031310049 in words is "thirty-one billion, thirty-one million, three hundred ten thousand, forty-nine".