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312023013 = 3353929389
BaseRepresentation
bin10010100110010…
…001011111100101
3210202010102002220
4102212101133211
51114334214023
650543422553
710506103041
oct2246213745
9722112086
10312023013
11150146565
12885b4a59
134c84a403
142d623021
151c5d63e3
hex129917e5

312023013 has 8 divisors (see below), whose sum is σ = 416162400. Its totient is φ = 207949488.

The previous prime is 312023009. The next prime is 312023027. The reversal of 312023013 is 310320213.

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

It is not a de Polignac number, because 312023013 - 22 = 312023009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 312022983 and 312023001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312023003) 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, 4078 + ... + 25311.

It is an arithmetic number, because the mean of its divisors is an integer number (52020300).

Almost surely, 2312023013 is an apocalyptic number.

It is an amenable number.

312023013 is a deficient number, since it is larger than the sum of its proper divisors (104139387).

312023013 is a wasteful number, since it uses less digits than its factorization.

312023013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32931.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 312023013 is about 17664.1731479285. The cubic root of 312023013 is about 678.2589638230.

Adding to 312023013 its reverse (310320213), we get a palindrome (622343226).

The spelling of 312023013 in words is "three hundred twelve million, twenty-three thousand, thirteen".

Divisors: 1 3 3539 10617 29389 88167 104007671 312023013