313320161 has 24 divisors (see below), whose sum is σ = 403105824. Its totient is φ = 240770880.

The previous prime is 313320151. The next prime is 313320169. The reversal of 313320161 is 161023313.

It is a happy number.

It is not a de Polignac number, because 313320161 - 2¹⁴ = 313303777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313320169) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35366 + ... + 43328.

It is an arithmetic number, because the mean of its divisors is an integer number (16796076).

Almost surely, 2^313320161 is an apocalyptic number.

It is an amenable number.

313320161 is a deficient number, since it is larger than the sum of its proper divisors (89785663).

313320161 is a wasteful number, since it uses less digits than its factorization.

313320161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8061 (or 8054 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 313320161 is about 17700.8519851447. The cubic root of 313320161 is about 679.1975547312.

Adding to 313320161 its reverse (161023313), we get a palindrome (474343474).

The spelling of 313320161 in words is "three hundred thirteen million, three hundred twenty thousand, one hundred sixty-one".