109312019 has 4 divisors (see below), whose sum is σ = 110279496. Its totient is φ = 108344544.

The previous prime is 109312013. The next prime is 109312037. The reversal of 109312019 is 910213901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109312019 - 2¹² = 109307923 is a prime.

It is a super-2 number, since 2×109312019² = 23898234995712722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109312013) 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 in 3 ways as a sum of consecutive naturals, for example, 483569 + ... + 483794.

It is an arithmetic number, because the mean of its divisors is an integer number (27569874).

Almost surely, 2^109312019 is an apocalyptic number.

109312019 is a deficient number, since it is larger than the sum of its proper divisors (967477).

109312019 is an equidigital number, since it uses as much as digits as its factorization.

109312019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967476.

The product of its (nonzero) digits is 486, while the sum is 26.

The square root of 109312019 is about 10455.2388303663. The cubic root of 109312019 is about 478.1409850637.

The spelling of 109312019 in words is "one hundred nine million, three hundred twelve thousand, nineteen".