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1130302231 = 2938975939
BaseRepresentation
bin100001101011111…
…0000101100010111
32220202212022011121
41003113300230113
54303324132411
6304054144411
740003260532
oct10327605427
92822768147
101130302231
11530031883
12276652107
131502303b6
14aa189a19
156936e571
hex435f0b17

1130302231 has 4 divisors (see below), whose sum is σ = 1169278200. Its totient is φ = 1091326264.

The previous prime is 1130302219. The next prime is 1130302249. The reversal of 1130302231 is 1322030311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1322030311 = 7188861473.

It is a cyclic number.

It is not a de Polignac number, because 1130302231 - 211 = 1130300183 is a prime.

It is a super-2 number, since 2×11303022312 = 2555166266807154722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130302331) 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, 19487941 + ... + 19487998.

It is an arithmetic number, because the mean of its divisors is an integer number (292319550).

Almost surely, 21130302231 is an apocalyptic number.

1130302231 is a deficient number, since it is larger than the sum of its proper divisors (38975969).

1130302231 is an equidigital number, since it uses as much as digits as its factorization.

1130302231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38975968.

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

The square root of 1130302231 is about 33619.9677423998. The cubic root of 1130302231 is about 1041.6732897655.

Adding to 1130302231 its reverse (1322030311), we get a palindrome (2452332542).

The spelling of 1130302231 in words is "one billion, one hundred thirty million, three hundred two thousand, two hundred thirty-one".

Divisors: 1 29 38975939 1130302231