70317161 has 4 divisors (see below), whose sum is σ = 70410324. Its totient is φ = 70224000.

The previous prime is 70317139. The next prime is 70317179. The reversal of 70317161 is 16171307.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16171307 = 53 ⋅305119.

It can be written as a sum of positive squares in 2 ways, for example, as 25694761 + 44622400 = 5069^2 + 6680^2 .

It is a cyclic number.

It is not a de Polignac number, because 70317161 - 2⁶ = 70317097 is a prime.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 70317161.

It is not an unprimeable number, because it can be changed into a prime (70317101) 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, 45440 + ... + 46961.

It is an arithmetic number, because the mean of its divisors is an integer number (17602581).

Almost surely, 2^70317161 is an apocalyptic number.

It is an amenable number.

70317161 is a deficient number, since it is larger than the sum of its proper divisors (93163).

70317161 is an equidigital number, since it uses as much as digits as its factorization.

70317161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93162.

The product of its (nonzero) digits is 882, while the sum is 26.

The square root of 70317161 is about 8385.5328393609. The cubic root of 70317161 is about 412.7500260780.

Adding to 70317161 its reverse (16171307), we get a palindrome (86488468).

The spelling of 70317161 in words is "seventy million, three hundred seventeen thousand, one hundred sixty-one".