31419109 has 2 divisors, whose sum is σ = 31419110. Its totient is φ = 31419108.

The previous prime is 31419097. The next prime is 31419119. The reversal of 31419109 is 90191413.

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., 25553025 + 5866084 = 5055^2 + 2422^2 .

It is a cyclic number.

It is not a de Polignac number, because 31419109 - 2¹⁹ = 30894821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31419119) 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, 15709554 + 15709555.

It is an arithmetic number, because the mean of its divisors is an integer number (15709555).

Almost surely, 2^31419109 is an apocalyptic number.

It is an amenable number.

31419109 is a deficient number, since it is larger than the sum of its proper divisors (1).

31419109 is an equidigital number, since it uses as much as digits as its factorization.

31419109 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 28.

The square root of 31419109 is about 5605.2751047562. The cubic root of 31419109 is about 315.5474112978.

The spelling of 31419109 in words is "thirty-one million, four hundred nineteen thousand, one hundred nine".