31614109 has 2 divisors, whose sum is σ = 31614110. Its totient is φ = 31614108.

The previous prime is 31614097. The next prime is 31614133. The reversal of 31614109 is 90141613.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31606884 + 7225 = 5622^2 + 85^2 .

It is an emirp because it is prime and its reverse (90141613) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31614109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31614179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15807054 + 15807055.

It is an arithmetic number, because the mean of its divisors is an integer number (15807055).

Almost surely, 2^31614109 is an apocalyptic number.

It is an amenable number.

31614109 is a deficient number, since it is larger than the sum of its proper divisors (1).

31614109 is an equidigital number, since it uses as much as digits as its factorization.

31614109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 31614109 is about 5622.6425282068. The cubic root of 31614109 is about 316.1988713711.

The spelling of 31614109 in words is "thirty-one million, six hundred fourteen thousand, one hundred nine".