171490313 has 2 divisors, whose sum is σ = 171490314. Its totient is φ = 171490312.

The previous prime is 171490309. The next prime is 171490327. The reversal of 171490313 is 313094171.

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., 163916809 + 7573504 = 12803^2 + 2752^2 .

It is a cyclic number.

It is not a de Polignac number, because 171490313 - 2² = 171490309 is a prime.

It is not a weakly prime, because it can be changed into another prime (171490303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85745156 + 85745157.

It is an arithmetic number, because the mean of its divisors is an integer number (85745157).

Almost surely, 2^171490313 is an apocalyptic number.

It is an amenable number.

171490313 is a deficient number, since it is larger than the sum of its proper divisors (1).

171490313 is an equidigital number, since it uses as much as digits as its factorization.

171490313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 171490313 is about 13095.4309971073. The cubic root of 171490313 is about 555.5799073429.

The spelling of 171490313 in words is "one hundred seventy-one million, four hundred ninety thousand, three hundred thirteen".