313113021 has 32 divisors (see below), whose sum is σ = 477767808. Its totient is φ = 180695040.

The previous prime is 313112999. The next prime is 313113037. The reversal of 313113021 is 120311313.

It is not a de Polignac number, because 313113021 - 2⁹ = 313112509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313113121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229381 + ... + 230741.

It is an arithmetic number, because the mean of its divisors is an integer number (14930244).

Almost surely, 2^313113021 is an apocalyptic number.

It is an amenable number.

313113021 is a deficient number, since it is larger than the sum of its proper divisors (164654787).

313113021 is a wasteful number, since it uses less digits than its factorization.

313113021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 313113021 is about 17694.9998869737. Note that the first 3 decimals coincide. The cubic root of 313113021 is about 679.0478463135.

Adding to 313113021 its reverse (120311313), we get a palindrome (433424334).

The spelling of 313113021 in words is "three hundred thirteen million, one hundred thirteen thousand, twenty-one".