313096981 has 4 divisors (see below), whose sum is σ = 313263072. Its totient is φ = 312930892.

The previous prime is 313096967. The next prime is 313097003. The reversal of 313096981 is 189690313.

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 313096981 - 2⁷ = 313096853 is a prime.

It is a super-2 number, since 2×313096981² = 196059439022628722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313096961) 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, 80185 + ... + 83998.

It is an arithmetic number, because the mean of its divisors is an integer number (78315768).

Almost surely, 2^313096981 is an apocalyptic number.

It is an amenable number.

313096981 is a deficient number, since it is larger than the sum of its proper divisors (166091).

313096981 is a wasteful number, since it uses less digits than its factorization.

313096981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166090.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 313096981 is about 17694.5466457889. The cubic root of 313096981 is about 679.0362508057.

The spelling of 313096981 in words is "three hundred thirteen million, ninety-six thousand, nine hundred eighty-one".