313775521 has 8 divisors (see below), whose sum is σ = 329209088. Its totient is φ = 298674000.

The previous prime is 313775507. The next prime is 313775531. The reversal of 313775521 is 125577313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313775521 - 2¹⁵ = 313742753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313775531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81075 + ... + 84856.

It is an arithmetic number, because the mean of its divisors is an integer number (41151136).

Almost surely, 2^313775521 is an apocalyptic number.

313775521 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

313775521 is a deficient number, since it is larger than the sum of its proper divisors (15433567).

313775521 is a wasteful number, since it uses less digits than its factorization.

313775521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166023.

The product of its digits is 22050, while the sum is 34.

The square root of 313775521 is about 17713.7099727866. The cubic root of 313775521 is about 679.5264299295.

The spelling of 313775521 in words is "three hundred thirteen million, seven hundred seventy-five thousand, five hundred twenty-one".