311483681 has 4 divisors (see below), whose sum is σ = 312787200. Its totient is φ = 310180164.

The previous prime is 311483647. The next prime is 311483699. The reversal of 311483681 is 186384113.

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.

It is a cyclic number.

It is not a de Polignac number, because 311483681 - 2²² = 307289377 is a prime.

It is a super-2 number, since 2×311483681² = 194044167058619522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (311483881) 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, 651401 + ... + 651878.

It is an arithmetic number, because the mean of its divisors is an integer number (78196800).

Almost surely, 2^311483681 is an apocalyptic number.

It is an amenable number.

311483681 is a deficient number, since it is larger than the sum of its proper divisors (1303519).

311483681 is a wasteful number, since it uses less digits than its factorization.

311483681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303518.

The product of its digits is 13824, while the sum is 35.

The square root of 311483681 is about 17648.9002773544. The cubic root of 311483681 is about 677.8679480788.

The spelling of 311483681 in words is "three hundred eleven million, four hundred eighty-three thousand, six hundred eighty-one".