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3103132231 = 19163322749
BaseRepresentation
bin1011100011110110…
…0000101001000111
322000021002110011101
42320331200221013
522323400212411
61231530520531
7136620121513
oct27075405107
98007073141
103103132231
1113527011a1
12727296147
133a5b83924
142161b1143
151326668c1
hexb8f60a47

3103132231 has 4 divisors (see below), whose sum is σ = 3266455000. Its totient is φ = 2939809464.

The previous prime is 3103132229. The next prime is 3103132261. The reversal of 3103132231 is 1322313013.

3103132231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3103132231 - 21 = 3103132229 is a prime.

It is a super-2 number, since 2×31031322312 = 19258859286142074722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 163322749 = 3103132231 / (3 + 1 + 0 + 3 + 1 + 3 + 2 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3103132199 and 3103132208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3103132261) 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, 81661356 + ... + 81661393.

It is an arithmetic number, because the mean of its divisors is an integer number (816613750).

Almost surely, 23103132231 is an apocalyptic number.

3103132231 is a deficient number, since it is larger than the sum of its proper divisors (163322769).

3103132231 is a wasteful number, since it uses less digits than its factorization.

3103132231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163322768.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 3103132231 is about 55705.7647914469. The cubic root of 3103132231 is about 1458.5906571020.

Adding to 3103132231 its reverse (1322313013), we get a palindrome (4425445244).

The spelling of 3103132231 in words is "three billion, one hundred three million, one hundred thirty-two thousand, two hundred thirty-one".

Divisors: 1 19 163322749 3103132231