109161071 has 4 divisors (see below), whose sum is σ = 109884144. Its totient is φ = 108438000.

The previous prime is 109161037. The next prime is 109161077. The reversal of 109161071 is 170161901.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109161071 is a prime.

It is a super-2 number, since 2×109161071² = 23832278843734082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109161071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109161077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361310 + ... + 361611.

It is an arithmetic number, because the mean of its divisors is an integer number (27471036).

Almost surely, 2^109161071 is an apocalyptic number.

109161071 is a deficient number, since it is larger than the sum of its proper divisors (723073).

109161071 is an equidigital number, since it uses as much as digits as its factorization.

109161071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723072.

The product of its (nonzero) digits is 378, while the sum is 26.

The square root of 109161071 is about 10448.0175631552. The cubic root of 109161071 is about 477.9207967951.

The spelling of 109161071 in words is "one hundred nine million, one hundred sixty-one thousand, seventy-one".