Search a number
1130032231 = 6991161641
BaseRepresentation
bin100001101011010…
…1110110001100111
32220202100120210121
41003112232301213
54303242012411
6304044302411
740001054416
oct10326566147
92822316717
101130032231
1152a967a39
12276541a07
13150167533
14aa11947d
1569319571
hex435aec67

1130032231 has 4 divisors (see below), whose sum is σ = 1130200864. Its totient is φ = 1129863600.

The previous prime is 1130032213. The next prime is 1130032247. The reversal of 1130032231 is 1322300311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1322300311 = 6412062871.

It is a cyclic number.

It is not a de Polignac number, because 1130032231 - 223 = 1121643623 is a prime.

It is a super-2 number, since 2×11300322312 = 2553945686197674722, 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 (1130032271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73830 + ... + 87811.

It is an arithmetic number, because the mean of its divisors is an integer number (282550216).

Almost surely, 21130032231 is an apocalyptic number.

1130032231 is a deficient number, since it is larger than the sum of its proper divisors (168633).

1130032231 is an equidigital number, since it uses as much as digits as its factorization.

1130032231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168632.

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

The square root of 1130032231 is about 33615.9520317364. The cubic root of 1130032231 is about 1041.5903402151.

Adding to 1130032231 its reverse (1322300311), we get a palindrome (2452332542).

The spelling of 1130032231 in words is "one billion, one hundred thirty million, thirty-two thousand, two hundred thirty-one".

Divisors: 1 6991 161641 1130032231