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313201031 = 11132190217
BaseRepresentation
bin10010101010110…
…001000110000111
3210211100021001012
4102222301012013
51120134413111
651024552435
710522110353
oct2252610607
9724307035
10313201031
11150880630
1288a8271b
134cb70670
142d84c463
151c76a48b
hex12ab1187

313201031 has 8 divisors (see below), whose sum is σ = 367956624. Its totient is φ = 262825920.

The previous prime is 313201019. The next prime is 313201033. The reversal of 313201031 is 130102313.

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 313201031 - 222 = 309006727 is a prime.

It is a super-2 number, since 2×3132010312 = 196189771638925922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313200997 and 313201015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313201033) 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, 1094966 + ... + 1095251.

It is an arithmetic number, because the mean of its divisors is an integer number (45994578).

Almost surely, 2313201031 is an apocalyptic number.

313201031 is a deficient number, since it is larger than the sum of its proper divisors (54755593).

313201031 is a wasteful number, since it uses less digits than its factorization.

313201031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2190241.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 313201031 is about 17697.4865729572. The cubic root of 313201031 is about 679.1114627485. Note that the first 3 decimals are identical.

Adding to 313201031 its reverse (130102313), we get a palindrome (443303344).

The spelling of 313201031 in words is "three hundred thirteen million, two hundred one thousand, thirty-one".

Divisors: 1 11 13 143 2190217 24092387 28472821 313201031