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2223312031 = 64311233079
BaseRepresentation
bin1000010010000101…
…0000110010011111
312201221112221202001
42010201100302133
514023131441111
61004341143131
7106044561163
oct20441206237
95657487661
102223312031
11a41002266
125206baaa7
13295804465
141713c8ca3
15d02c41c1
hex84850c9f

2223312031 has 8 divisors (see below), whose sum is σ = 2229476480. Its totient is φ = 2217157272.

The previous prime is 2223311939. The next prime is 2223312041. The reversal of 2223312031 is 1302133222.

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 2223312031 - 215 = 2223279263 is a prime.

It is a super-2 number, since 2×22233120312 = 9886232774378689922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2223312041) 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, 720550 + ... + 723628.

It is an arithmetic number, because the mean of its divisors is an integer number (278684560).

Almost surely, 22223312031 is an apocalyptic number.

2223312031 is a deficient number, since it is larger than the sum of its proper divisors (6164449).

2223312031 is a wasteful number, since it uses less digits than its factorization.

2223312031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4845.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 2223312031 is about 47152.0098299108. The cubic root of 2223312031 is about 1305.1691683829.

Adding to 2223312031 its reverse (1302133222), we get a palindrome (3525445253).

The spelling of 2223312031 in words is "two billion, two hundred twenty-three million, three hundred twelve thousand, thirty-one".

Divisors: 1 643 1123 3079 722089 1979797 3457717 2223312031