313528821 has 8 divisors (see below), whose sum is σ = 419548704. Its totient is φ = 208264080.

The previous prime is 313528819. The next prime is 313528877. The reversal of 313528821 is 128825313.

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

It is not a de Polignac number, because 313528821 - 2¹ = 313528819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313528811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187815 + ... + 189476.

It is an arithmetic number, because the mean of its divisors is an integer number (52443588).

Almost surely, 2^313528821 is an apocalyptic number.

It is an amenable number.

313528821 is a deficient number, since it is larger than the sum of its proper divisors (106019883).

313528821 is a wasteful number, since it uses less digits than its factorization.

313528821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377571.

The product of its digits is 11520, while the sum is 33.

The square root of 313528821 is about 17706.7450707351. The cubic root of 313528821 is about 679.3482950182.

The spelling of 313528821 in words is "three hundred thirteen million, five hundred twenty-eight thousand, eight hundred twenty-one".