313042021 has 8 divisors (see below), whose sum is σ = 320603360. Its totient is φ = 305493552.

The previous prime is 313041991. The next prime is 313042027. The reversal of 313042021 is 120240313.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313042021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313041986 and 313042004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313042027) 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, 61315 + ... + 66223.

It is an arithmetic number, because the mean of its divisors is an integer number (40075420).

Almost surely, 2^313042021 is an apocalyptic number.

It is an amenable number.

313042021 is a deficient number, since it is larger than the sum of its proper divisors (7561339).

313042021 is a wasteful number, since it uses less digits than its factorization.

313042021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6435.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 313042021 is about 17692.9935567727. The cubic root of 313042021 is about 678.9965165609.

Adding to 313042021 its reverse (120240313), we get a palindrome (433282334).

The spelling of 313042021 in words is "three hundred thirteen million, forty-two thousand, twenty-one".