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2831122085 = 51151474947
BaseRepresentation
bin1010100010111111…
…0111111010100101
321022022020220101112
42220233313322211
521244231401320
61144532434405
7130105066151
oct25057677245
97268226345
102831122085
111223104a20
12670178a05
13361705b8c
141cc006061
15118835ec5
hexa8bf7ea5

2831122085 has 8 divisors (see below), whose sum is σ = 3706196256. Its totient is φ = 2058997840.

The previous prime is 2831122079. The next prime is 2831122087. The reversal of 2831122085 is 5802211382.

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 2831122085 - 222 = 2826927781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2831122087) 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, 25737419 + ... + 25737528.

It is an arithmetic number, because the mean of its divisors is an integer number (463274532).

Almost surely, 22831122085 is an apocalyptic number.

It is an amenable number.

2831122085 is a deficient number, since it is larger than the sum of its proper divisors (875074171).

2831122085 is a wasteful number, since it uses less digits than its factorization.

2831122085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51474963.

The product of its (nonzero) digits is 7680, while the sum is 32.

The square root of 2831122085 is about 53208.2896267114. The cubic root of 2831122085 is about 1414.6625798358.

It can be divided in two parts, 28 and 31122085, that added together give a palindrome (31122113).

The spelling of 2831122085 in words is "two billion, eight hundred thirty-one million, one hundred twenty-two thousand, eighty-five".

Divisors: 1 5 11 55 51474947 257374735 566224417 2831122085