31458050191 has 2 divisors, whose sum is σ = 31458050192. Its totient is φ = 31458050190.

The previous prime is 31458050167. The next prime is 31458050219. The reversal of 31458050191 is 19105085413.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31458050191 - 2¹¹ = 31458048143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31458050191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31458050111) 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, 15729025095 + 15729025096.

It is an arithmetic number, because the mean of its divisors is an integer number (15729025096).

Almost surely, 2^31458050191 is an apocalyptic number.

31458050191 is a deficient number, since it is larger than the sum of its proper divisors (1).

31458050191 is an equidigital number, since it uses as much as digits as its factorization.

31458050191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 37.

The spelling of 31458050191 in words is "thirty-one billion, four hundred fifty-eight million, fifty thousand, one hundred ninety-one".