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122131233 = 347215399
BaseRepresentation
bin1110100011110…
…01001100100001
322111210220120000
413101321030201
5222231144413
620041410213
73012045510
oct721711441
9274726500
10122131233
1162a38004
1234a99969
131c3c2003
1412312677
15aac7073
hex7479321

122131233 has 20 divisors (see below), whose sum is σ = 208507200. Its totient is φ = 69788952.

The previous prime is 122131199. The next prime is 122131237. The reversal of 122131233 is 332131221.

It is not a de Polignac number, because 122131233 - 220 = 121082657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (122131237) 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 19 ways as a sum of consecutive naturals, for example, 107133 + ... + 108266.

It is an arithmetic number, because the mean of its divisors is an integer number (10425360).

Almost surely, 2122131233 is an apocalyptic number.

It is an amenable number.

122131233 is a deficient number, since it is larger than the sum of its proper divisors (86375967).

122131233 is an equidigital number, since it uses as much as digits as its factorization.

122131233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215418 (or 215409 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 122131233 is about 11051.3000592690. The cubic root of 122131233 is about 496.1453368429.

Adding to 122131233 its reverse (332131221), we get a palindrome (454262454).

The spelling of 122131233 in words is "one hundred twenty-two million, one hundred thirty-one thousand, two hundred thirty-three".

Divisors: 1 3 7 9 21 27 63 81 189 567 215399 646197 1507793 1938591 4523379 5815773 13570137 17447319 40710411 122131233