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122130313 = 227538019
BaseRepresentation
bin1110100011110…
…00111110001001
322111210212021221
413101320332021
5222231132223
620041402041
73012043024
oct721707611
9274725257
10122130313
1162a37348
1234a99321
131c3c1776
14123121bb
15aac6b5d
hex7478f89

122130313 has 4 divisors (see below), whose sum is σ = 122668560. Its totient is φ = 121592068.

The previous prime is 122130289. The next prime is 122130343. The reversal of 122130313 is 313031221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-122130313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122130343) 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, 268783 + ... + 269236.

It is an arithmetic number, because the mean of its divisors is an integer number (30667140).

Almost surely, 2122130313 is an apocalyptic number.

It is an amenable number.

122130313 is a deficient number, since it is larger than the sum of its proper divisors (538247).

122130313 is an equidigital number, since it uses as much as digits as its factorization.

122130313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538246.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 122130313 is about 11051.2584351286. The cubic root of 122130313 is about 496.1440910385.

Adding to 122130313 its reverse (313031221), we get a palindrome (435161534).

The spelling of 122130313 in words is "one hundred twenty-two million, one hundred thirty thousand, three hundred thirteen".

Divisors: 1 227 538019 122130313