109312157173 has 2 divisors, whose sum is σ = 109312157174. Its totient is φ = 109312157172.

The previous prime is 109312157167. The next prime is 109312157231. The reversal of 109312157173 is 371751213901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77876157969 + 31435999204 = 279063^2 + 177302^2 .

It is an emirp because it is prime and its reverse (371751213901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109312157173 - 2²⁹ = 108775286261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (109312157573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54656078586 + 54656078587.

It is an arithmetic number, because the mean of its divisors is an integer number (54656078587).

Almost surely, 2^109312157173 is an apocalyptic number.

It is an amenable number.

109312157173 is a deficient number, since it is larger than the sum of its proper divisors (1).

109312157173 is an equidigital number, since it uses as much as digits as its factorization.

109312157173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39690, while the sum is 40.

The spelling of 109312157173 in words is "one hundred nine billion, three hundred twelve million, one hundred fifty-seven thousand, one hundred seventy-three".