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83023311 = 373953491
BaseRepresentation
bin1001111001011…
…01010111001111
312210020000120110
410330231113033
5132223221221
612123251103
72025454320
oct474552717
9183200513
1083023311
1142956708
1223979a93
131427b527
14b052447
15744e776
hex4f2d5cf

83023311 has 8 divisors (see below), whose sum is σ = 126511744. Its totient is φ = 47441880.

The previous prime is 83023309. The next prime is 83023321. The reversal of 83023311 is 11332038.

It is a happy number.

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

It is not a de Polignac number, because 83023311 - 21 = 83023309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 3953491 = 83023311 / (8 + 3 + 0 + 2 + 3 + 3 + 1 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83023321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1976725 + ... + 1976766.

It is an arithmetic number, because the mean of its divisors is an integer number (15813968).

Almost surely, 283023311 is an apocalyptic number.

83023311 is a deficient number, since it is larger than the sum of its proper divisors (43488433).

83023311 is a wasteful number, since it uses less digits than its factorization.

83023311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3953501.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 83023311 is about 9111.7128466606. The cubic root of 83023311 is about 436.2479003629.

Adding to 83023311 its reverse (11332038), we get a palindrome (94355349).

The spelling of 83023311 in words is "eighty-three million, twenty-three thousand, three hundred eleven".

Divisors: 1 3 7 21 3953491 11860473 27674437 83023311