313646081 has 4 divisors (see below), whose sum is σ = 358452672. Its totient is φ = 268839492.

The previous prime is 313646071. The next prime is 313646111. The reversal of 313646081 is 180646313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180646313 = 53 ⋅3408421.

It is a cyclic number.

It is not a de Polignac number, because 313646081 - 2⁶ = 313646017 is a prime.

It is a super-2 number, since 2×313646081² = 196747728253317122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313646051) 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, 22403285 + ... + 22403298.

It is an arithmetic number, because the mean of its divisors is an integer number (89613168).

Almost surely, 2^313646081 is an apocalyptic number.

It is an amenable number.

313646081 is a deficient number, since it is larger than the sum of its proper divisors (44806591).

313646081 is an equidigital number, since it uses as much as digits as its factorization.

313646081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44806590.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 313646081 is about 17710.0559287654. The cubic root of 313646081 is about 679.4329767091.

The spelling of 313646081 in words is "three hundred thirteen million, six hundred forty-six thousand, eighty-one".