371720117 has 2 divisors, whose sum is σ = 371720118. Its totient is φ = 371720116.

The previous prime is 371720029. The next prime is 371720179. The reversal of 371720117 is 711027173.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 366875716 + 4844401 = 19154^2 + 2201^2 .

It is a cyclic number.

It is not a de Polignac number, because 371720117 - 2¹⁶ = 371654581 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 371720117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (371723117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185860058 + 185860059.

It is an arithmetic number, because the mean of its divisors is an integer number (185860059).

Almost surely, 2^371720117 is an apocalyptic number.

It is an amenable number.

371720117 is a deficient number, since it is larger than the sum of its proper divisors (1).

371720117 is an equidigital number, since it uses as much as digits as its factorization.

371720117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2058, while the sum is 29.

The square root of 371720117 is about 19280.0445279569. The cubic root of 371720117 is about 719.0162213606.

The spelling of 371720117 in words is "three hundred seventy-one million, seven hundred twenty thousand, one hundred seventeen".