313110021 has 32 divisors (see below), whose sum is σ = 494644480. Its totient is φ = 172440576.

The previous prime is 313109981. The next prime is 313110037. The reversal of 313110021 is 120011313.

It is not a de Polignac number, because 313110021 - 2²⁶ = 246001157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313109979 and 313110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313110041) 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 31 ways as a sum of consecutive naturals, for example, 82845 + ... + 86541.

It is an arithmetic number, because the mean of its divisors is an integer number (15457640).

Almost surely, 2^313110021 is an apocalyptic number.

It is an amenable number.

313110021 is a deficient number, since it is larger than the sum of its proper divisors (181534459).

313110021 is a wasteful number, since it uses less digits than its factorization.

313110021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3853.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 313110021 is about 17694.9151170612. The cubic root of 313110021 is about 679.0456776077.

Adding to 313110021 its reverse (120011313), we get a palindrome (433121334).

The spelling of 313110021 in words is "three hundred thirteen million, one hundred ten thousand, twenty-one".