31092905849 has 2 divisors, whose sum is σ = 31092905850. Its totient is φ = 31092905848.

The previous prime is 31092905783. The next prime is 31092905897. The reversal of 31092905849 is 94850929013.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30654757225 + 438148624 = 175085^2 + 20932^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31092905849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31092905797 and 31092905806.

It is not a weakly prime, because it can be changed into another prime (31092905149) 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, 15546452924 + 15546452925.

It is an arithmetic number, because the mean of its divisors is an integer number (15546452925).

Almost surely, 2^31092905849 is an apocalyptic number.

It is an amenable number.

31092905849 is a deficient number, since it is larger than the sum of its proper divisors (1).

31092905849 is an equidigital number, since it uses as much as digits as its factorization.

31092905849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 31092905849 in words is "thirty-one billion, ninety-two million, nine hundred five thousand, eight hundred forty-nine".