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2320212031 = 18112818851
BaseRepresentation
bin1000101001001011…
…1010000000111111
312222200212222112221
42022102322000333
514222433241111
61022122110211
7111332322364
oct21222720077
95880788487
102320212031
11a90776705
1254904b367
132ac900c37
1418021046b
15d8a65371
hex8a4ba03f

2320212031 has 4 divisors (see below), whose sum is σ = 2333031064. Its totient is φ = 2307393000.

The previous prime is 2320212029. The next prime is 2320212049. The reversal of 2320212031 is 1302120232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2320212031 - 21 = 2320212029 is a prime.

It is a super-2 number, since 2×23202120312 = 10766767737594289922, 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 = 2320211996 and 2320212014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2320212001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6409245 + ... + 6409606.

It is an arithmetic number, because the mean of its divisors is an integer number (583257766).

Almost surely, 22320212031 is an apocalyptic number.

2320212031 is a deficient number, since it is larger than the sum of its proper divisors (12819033).

2320212031 is a wasteful number, since it uses less digits than its factorization.

2320212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12819032.

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

The square root of 2320212031 is about 48168.5792918994. The cubic root of 2320212031 is about 1323.8615175621.

Adding to 2320212031 its reverse (1302120232), we get a palindrome (3622332263).

The spelling of 2320212031 in words is "two billion, three hundred twenty million, two hundred twelve thousand, thirty-one".

Divisors: 1 181 12818851 2320212031