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83231051 = 820910139
BaseRepresentation
bin1001111011000…
…00000101001011
312210121120112112
410331200011023
5132301343201
612131532535
72030311061
oct475400513
9183546475
1083231051
1142a887a2
1223a5a14b
1314321c57
14b0a8031
1574910bb
hex4f6014b

83231051 has 4 divisors (see below), whose sum is σ = 83249400. Its totient is φ = 83212704.

The previous prime is 83231017. The next prime is 83231059. The reversal of 83231051 is 15013238.

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 83231051 - 210 = 83230027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83231059) 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, 3140 + ... + 13278.

It is an arithmetic number, because the mean of its divisors is an integer number (20812350).

Almost surely, 283231051 is an apocalyptic number.

83231051 is a deficient number, since it is larger than the sum of its proper divisors (18349).

83231051 is a wasteful number, since it uses less digits than its factorization.

83231051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18348.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 83231051 is about 9123.1053375482. The cubic root of 83231051 is about 436.6114555088.

Adding to 83231051 its reverse (15013238), we get a palindrome (98244289).

The spelling of 83231051 in words is "eighty-three million, two hundred thirty-one thousand, fifty-one".

Divisors: 1 8209 10139 83231051